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Home / Gear / Jackets / Insulated Jackets / Down Jackets

ABOUT ME
Hey, what's up? Canberk here. A former General Electric Aviation Design Engineer. Academically involved in cold weather outdoor gear, particularly wearable heating systems using conductive polyester and polyamide yarns. Read more about me. 

Arc’teryx Firebee AR vs Ceres SV

Last updated: October 25, 2023 by Canberk Koksal

  • This article is revised after Arc'teryx FW24 update. 
  • Gift Guide: https://arcteryx.com/us/en/giftguide/
  • REI is on a rare sale. Don't miss. Patagonia's are like up to 70% off... 
    • https://www.rei.com/h/deals

Ceres SV and Firebee AR once were Arc'teryx's first and second warmest pieces. 

They remain discontinued for FW24 too. 

For Ceres SV, which is a hybrid jacket (down & synthetic insulation), Arc'teryx brought its alternative, the Alpha Parka (Men's - Women's - read review). It's solid and probably one of the best freezing weather jackets of all time. 

For Firebee AR, however, it's another story. It's solely a down jacket. No synthetic insulation whatsoever. 

Arc'teryx has never really been known with their highest quality down jackets. Rather, they're popular for their synthetic insulated jackets and hardshell/softshell jackets. 

When it's cold, like really cold, precipitation isn't the thing that you worry about. Below 0 deg C, rain won't happen anyway. Which is where down jackets come to play and fill the need. 

By simply leaving synthetic insulation out of a jacket, you don't only ensure a much lower weight but you also provide a much smaller packed size.

When packed, Firebee AR had stuffed into half the size of Ceres SV. It was impressive and it was also cited on each related page on Arc'teryx's own site as well. 

In FW24 catalogue the closest you get to Firebee AR is not so close. It's the Thorium (Men's - Women's - read review).

I however also think that Arc'teryx will bring back Cerium SV in a few days. Which is much closer to Firebee AR.

They only have to deal with naming scheme changes, especially after changing Cerium SL to Cerium Lightweight and Cerium LT to Cerium. Cerium SV will probably be Cerium Heavyweight, just like other lines such as Atom and Proton. 

Firebee AR and Ceres SV can still worth getting even after years of use, when found at a lower price. This guide will help you decide. 

  • Fit

I'm 5'11", 165 lbs, athletic build. Size M fits me perfectly. 

My size is always the same. Arc'teryx, Patagonia, TNF, Salomon, Columbia, Nike, Adidas, Under Armour, Zara... Doesn't matter. 


  • Arc'teryx's 2024 men's fit revision

Straight from arcteryx.com on what's changed: 

Source: https://arcteryx.com/us/en/help/sizing/mens/tops/new

Not all jackets come with revised fit. Only the ones with following statement. 

  • Poll

Which Arc'teryx fit do you prefer?

  • Poll

Which cuff type do you like more?


First thing you should know about them is that they're NOT designed for high output activities (skiing, climbing, cycling, etc.) since you'd overheat very easily (unless you run unusually cold - which I'd highly doubt). 

They're designed for mostly stationary use out in extreme colds where you would not encounter wet conditions (ie. rain, snow) and where packability is a concern: Hiking, camping, traveling, ice fishing, etc. 

  • Feed
  • Poll results: Giant Arc'teryx & Patagoina survey (Gore-Tex, pockets, hoods, fit, & more) [1000+ participated]
  • Pics from outrageous discounts I ran into at Arc'teryx Parndorf Outlet
  • I bought Gamma Lightweight (aka SL), Gamma (aka LT) and Gamma MX
  • Patera Parka (one year update): Ain't worth the price...
  • Alpha vs Beta: I bought all 4 Beta's and both Alpha's. Settling this for good
  • I visited Iceland again, this time with a Nuclei (aka FL)
  • Proton Hybrid: A "hidden" way to stuff it in itself!?
  • Best Insulated Jackets: A hands-on Arc'teryx & Patagonia face-off
  • 2024 Nano Air is in! Bought it immediately...
  • I bought all 7 of Winter '24 Atom and Proton jackets
  • Best Arc'teryx Ski Jackets: Rush is ideal, Sabre SV is overkill
  • Arc’teryx colors: Most and least liked (poll results)
  • Took my Nuclei SV to the Alps near Pfander, Austria
  • Arc'teryx Alpha Parka Review: The most impressive jacket of all time
  • Arc'teryx ReGEAR: OutdoorCrunch exclusive promo code!
  • Beta Insulated Jacket is in: Pit zips AND two way zipper
  • DropHood vs StormHood: Pros/cons and best uses
  • 7 things all Arc'teryx newbies should know

Like hauntingly dark yet brilliantly brilliant electronic music? Check out my Hidden Electronic Gems playlist at Spotify. 

  • Just dropped
  • Macai Shell: https://arcteryx.com/us/en/shop/mens/macai-shell-jacket
  • Nita: https://arcteryx.com/us/en/shop/womens/nita-down-jacket
  • Epsilon: https://arcteryx.com/us/en/shop/mens/epsilon-insulated-hoody
  • Cerium Pants (yes, seriously): https://arcteryx.com/us/en/shop/mens/cerium-pant
  • Liatris: https://arcteryx.com/us/en/shop/womens/liatris-down-jacket
  • Thorium SV: https://arcteryx.com/us/en/shop/mens/thorium-sv-hoody
  • Proton Heavyweight: https://arcteryx.com/us/en/shop/mens/proton-heavyweight-hoody
  • Atom Shacket: https://arcteryx.com/us/en/shop/womens/atom-shacket 
  • New Nano Air: https://patagonia.com/product/mens-nano-air-insulated-hoody/84367.html
Think of Firebee as a lighter, shorter, more packable, more weather resistant, less warm and a more breathable version of the Ceres. 

In summary, if packability is almost as important as warmth for you, then the Firebee could be a better option. If packability is not that important, but still a must have, than the Ceres is more suitable.

Firebee (see image) is lighter, shorter, more packable, more weather resistant, less warm and more breathable than the Ceres.

If you'll be wearing your jacket only casually when it's freezing out in town and hence don't care about packability at all...

Then I'd surprise you and recommend the Therme SV (Men's - read review) or Patera (Women's - read review) instead.

Both Firebee and Ceres are equipped with 850-fill down (highest quality) insulation and also supported with synthetic insulation in addition (for extra wet weather performance).

But the amounts as to how much they're stuffed with them differ, which is an equally important factor that defines the warmth:

  • Ceres SV is equipped with 240 grams of down.
  • Firebee AR is equipped with 225 grams of down.

  • Temperature ratings of Arc'teryx jackets

NameEst. Temp (F/C)ReviewTypeFill Power (in3/oz)Fill Weight (g)Fill Volume (in3)Synthetic FillSynth. Fill WeightFace FabricPit venting?Two way zipper?Stuffs into itself?ActivityFitWeightLength (CB)Discontinued?
Arc'teryx Alpha (Men's - Women's)-18/-28ReviewDown8502968,875Coreloft90 g/m²N30r 2L GoreTex InfiniumNoYesYesClimbingRegular805 g / 1 lb 12.4 oz86 cm / 34 inNo
Feathered Friends Khumbu-17/-27Down90037812,000Primaloft Gold200 gPretex Shield XTNoNoYesAll RoundRegular960 g / 2 lb 2 oz?No
Arc'teryx Ceres SV (Men's - Women's)-15/-26ReviewDown8502407,196Coreloft?Arato 30NoYesYesAll RoundRegular880 g / 1 lb 15 oz86 cm / 34 inYes
Mountain Equipment K7 (Men's)-13/-25Down8003008,466N/AN/A30D DriliteNoYesYesAll RoundRegular820 g / 1 lb 13 oz76 cm / 30 inNo
Rab Positron Pro (Men's)-13/-25Down8003008,466N/AN/A40D Pertex Quantum ProNoYesYesAll RoundRegular740 g / 1 lb 10 oz85 cm / 33.5 inNo
Arc'teryx Therme SV (Men's)-11/-24ReviewParka7502115,582Coreloft60 g/m²2L Gore-TexNoYesNoAround TownRegular1.072 kg / 2 lb 5.8 oz96 cm / 37.75 inNo
Patagonia Grade VII-11/-24Down8003359,453N/AN/A1.2 oz 15 & 20D Pertex QuantumNoYesNoAround TownRegular743 g / 1 lb 10.1 oz83 cm / 32.5 inYes
Patagonia AlpLoft (Men's - Women's)-10/-23Down8002958,325N/AN/APertex QuantomNoYesYesAll RoundRegular680 g / 1 lb 8 oz81 cm / 31.8 inNo
Arc'teryx Firebee AR (Men's - Women's)-10/-23ReviewDown8002256,349N/AN/AArato 7 & 10NoYesYesAll RoundRegular680 g / 1 lb 8 oz79 cm / 31 inYes
Mountain Equipment Exo (Men's)-10/-23Down8002657,478N/AN/ANylonNoYesYesAll RoundRegular770 g / 1 lb 11.2 oz79 cm / 31 inNo
Arc'teryx Thorsen (Men's)-7/-22ReviewParka7501925,079Coreloft60 g/m²90D 2L Gore-TexNoYesNoAround TownRegular1.1 kg / 2 lb 5.4 oz91 cm / 36 inYes
Patagonia Frozen Range (Men's - Women's)-6/-21ReviewParka7002686,617N/AN/A4 oz 75-denier polyesterNoNoNoAround TownRegular1.253 kg / 2 lb 12.2 oz84 cm / 33 inYes
Mountain Equipment Li. Ec. (Men's - Women's)-5/-20Down7002957,284N/AN/A50D DriliteNoYesNoAll RoundRegular822 g / 1 lb 13 oz72 cm / 28 inYes
Arc'teryx Thorium Parka (Women's)-2/-19ReviewDown7502095,529Coreloft80 + 140 g/m²Arato 20NoYesNoAround TownRegular610 g / 1 lb 5.5 oz115.8 cm / 45.6 inNo
Rab Neutrino Pro (Men's - Women's)-2/-19Down8002125,982N/AN/A20D Pertex Quantum ProNoYesYesAll RoundRegular585 g / 1 lb 8.6 oz77 cm / 30.3 inNo
Arc'teryx Patera Long (Women's)0/-18Parka7502045,397Coreloft60 + 80 g/m²2L Gore-TexNoYesNoAround TownRegular1.1 kg / 2 lb 6.8 oz117.5 cm / 46.25 inNo
Patagonia Stormshadow (Men's)0/-18Parka7002596,395N/AN/A75D PolyesterNoNoNoAround TownRegular1.182 kg / 2 lb 9.7 oz?No
Arc'teryx Beta Down Insulated (Men's)0/-18Parka8501263,778Coreloft80 g/m²2L 40D Gore-TexYesYesNoAll RoundRegular760 g / 1 lb 10.8 oz79 cm / 31 inNo
Arc'teryx Dually Belay (Men's)0/-18ReviewSyntheticN/AN/AN/AThermaTek92 g/m²30D NylonNoYesYesAround TownRegular705 g / 1 lb 9 oz84 cm / 33 inYes
Arc'teryx Centrale (Women's)0/-18ReviewParka7501574,154Coreloft60 g/m²N90p NylonNoYesNoAround TownRegular885 g / 1 lb 15.2 oz95 cm / 37.5 inYes
Arc'teryx Thorium SV Parka (Men's)0/-18Down7501955,159Coreloft80 + 140 g/m²Arato 30 & 2L Gore-Tex InfiniumNoYesNoAround TownRegular685 g / 1 lb 8.2 oz85 cm / 33.5 inNo
Arc'teryx Camosun (Men's)0/-18ReviewParka7501052,778Coreloft140 g/m²N150p-X Gore-TexNoNoNoAround TownTrim960 g / 2 lb 1.9 oz80 cm / 31.5 inYes
Arc'teryx Cerium SV (Men's - Women's)0/-18ReviewDown8501624,857Coreloft80 + 140 g/m²Arato 7 & 10NoNoYesAll RoundRegular415 g / 14.6 oz69.5 cm / 27.4 inYes
Arc'teryx Liatris Parka (Women's)2/-17Parka8501364,078Climashield80 g/m2 + 60 g/m270D 3L Gore-TexNoNoNoAround TownRegular1.093 kg / 2 lb 6.6 oz109 cm / 43 inNo
Arc'teryx Revet (Men's)2/-17Parka750?N/AN/AN/A20d nylon/spandex double weaveNoYesNoAround TownRegular755 g / 1 lb 10.6 oz91 cm / 36 inYes
Arc'teryx Thorium SV (Men's)3/-16Down7501694,471Coreloft80 + 140 g/m²Arato 30 & 2L Gore-Tex InfiniumNoYesYesAround TownRegular645 g / 1 lb 6.8 oz73 cm / 28.75 inNo
Arc'teryx Piedmont (Men's)3/-16Parka7502185,767N/AN/AArato 10NoYesYesAround TownRegular515 g / 1 lb 2.2 oz82 cm / 32.25 inYes
Outdoor Research Sup. Alp. (Men's - Women's)3/-16Down8001825,136N/AN/A30D Pertex Quantum ProNoYesNoAll RoundRegular825 g / 1 lb 13.1 oz85 cm / 33.5 inNo
Arc'teryx Fission SV (Men's - Women's)3/-16ReviewSyntheticN/AN/AN/ACoreloft Continuous90 + 65 g/m²N80p-X Gore-Tex 2LNoYesNoAll RoundRegular890 g / 1 lb 15.4 oz81 cm / 31.8 inYes
Arc'teryx Alessa Long3/-16ParkaN/AN/AN/ACoreloft80 + 120 g/m²N90p 2L Gore-TexNoNoNoAround TownRegular1.015 kg / 2 lb 3.8 oz123 cm / 48.5 inYes
Arc'teryx Radsten Parka (Men's)3/-16ParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LNoNoNoAround TownRegular745 g / 1 lb 10.3 oz82 cm / 32.25 inYes
Rab Electron Pro (Men's - Women's)5/-15Down8001805,079N/AN/A20D Pertex Quantum ProNoYesYesAll RoundRegular525 g / 1 lb 2.5 oz74 cm / 29 inNo
Rab Infinity Alpine (Men's)5/-15Down8001754,938N/AN/A30D & 13D Gore-Tex InfiniumNoYesYesAll RoundRegular551 g / 1 lb 3.4 oz76.5 cm / 30.1 inNo
Arc'teryx Alpha Lightweight (Men's - Women's)5/-15Down8501173,508Coreloft Compact40 g/m²Hadron 2L Gore-Tex InfiniumNoYesYesClimbingRegular540 g / 1 lb 3 oz79.5 cm / 31.25 inNo
Arc'teryx Therme Parka (Men's)5/-15ReviewParka7501203,175Coreloft60 + 80 g/m²P75d PolyesterNoYesNoAround TownRegular991 g / 2 lb 3 oz85 cm / 33.5 inNo
Arc'teryx Liatris (Women's)5/-15Parka850932,788Climashield80 g/m2 + 60 g/m270D 3L Gore-TexNoNoNoAround TownRegular890 g / 1 lb 15.4 oz75 cm / 29.5 inNo
Arc'teryx Macai (Men's)5/-15ReviewShell750691,825Coreloft Compact60 + 100 g/m²N40p-X 3L Gore-TexYes, zipsNoNoSki/SnowboardRegular1 kg / 2 lb 4 oz76 cm / 30 inNo
Arc'teryx Nuclei SV (Men's - Women's)5/-15ReviewSyntheticN/AN/AN/ACoreloft Continuous190 g/m2 + 90 g/m2Arato 15NoYesYesAll RoundRegular600 g / 1 lb 5.2 oz81 cm / 31.8 inNo
Black Diamond Access Down (Men's - Women's)7/-14Down7001553,827N/AN/A30D ripstop nylonNoYesYesAll RoundRegular442 g / 15.6 oz76 cm / 29.75 inNo
Arc'teryx Kappa (Men's)7/-14ReviewSyntheticN/AN/AN/ACoreloft Continuous140 g/m²N70p Gore ThermiumNoYesNoAll RoundRegular755 g / 1 lb 10.6 oz80 cm / 31.5 inYes
Patagonia Jackson Glacier Parka (Men's - Women's)7/-14Parka7002185,383N/AN/A50D PolyesterNoNoNoAround TownRegular1.142 kg / 2 lb 8.3 oz?No
Arc'teryx Prema Down Coat (Women's)7/-14Parka750922,434N/AN/ANylonNoYesNoAround TownRegular794 g / 1 lb 12 oz117 cm / 46.1 inYes
Arc'teryx Radsten Insulated (Men's)7/-14ParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LNoNoNoAround TownRegular715 g / 1 lb 9.2 oz73 cm / 28.75 inYes
Rab Microlight Alpine (Men's - Women's)7/-14Down7001533,778N/AN/A30D Pertex QuantumNoNoYesAll RoundRegular466 g / 1 lb 0.5 oz72 cm / 28.5 inNo
Feathered Friends Eos8/-13Down9001053,333N/AN/APertex QuantumNoNoYesAll RoundRegular306 g / 10.8 oz?No
Patagonia Macro Puff (Men's - Women's)8/-13ReviewSyntheticN/AN/AN/APlumaFill135 + 90 g10D Recycled nylon ripstopNoNoNoAll RoundRegular435 g / 15.3 oz79 cm / 31 inYes
Arc'teryx Macai Lightweight (aka LT) (Men's)8/-13Shell750491,296Coreloft Compact60 g/m²N40p-X 3L Gore-TexYes, zipsNoNoSki/SnowboardRegular855 g / 1 lb 14.2 oz74 cm / 29.1 inNo
Patagonia Tres 3-in-1 (Men's - Women's)8/-13ReviewParka7001182,914N/AN/A5.5 oz polyesterNoNoNoAround TownRegular1.307 kg / 2 lb 14.1 oz85 cm / 33.5 inNo
Arc'teryx Seyla (Women's)8/-13Parka750922,434N/AN/AArato 10NoYesNoAround TownRegular507 g / 1 lb. 1.9 oz.87 cm / 34.4 inYes
Arc'teryx Koda (Men's)8/-13ParkaN/AN/AN/ACoreloft80 + 140 g/m²N80p-X Gore-TexNoNoNoAround TownRegular720 g / 1 lb 9.4 oz75 cm / 29.5 inYes
Patagonia DAS (Men's - Women's)10/-12ReviewSyntheticN/AN/AN/APrimaLoft Gold Insulation Eco133 + 40 gPertex Quantum ProNoYesYesAll RoundRegular555 g / 1 lb 3.6 oz84 cm / 33 inNo
Patagonia Vosque 3-in-1 (Women's)10/-12ReviewParkaN/AN/AN/AThermoLite100 g65% nylon, 35% polyesterNoNoNoAround TownRegular1.360 kg / 3 lb90 cm / 35.5 inNo
Arc'teryx Thorium (Men's - Women's)12/-11ReviewDown7501403,704Coreloft80 + 140 g/m²Arato 30NoYesYesAll RoundRegular517 g / 1 lb 2.2 oz71.5 cm / 28.1 inNo
Patagonia City Storm Down (Men's - Women's)12/-11Parka7001914,716N/AN/A4.2 oz polyesterNoNoYesAll RoundRegular468 g / 16.5 oz91 cm / 36 inYes
Patagonia Jackson Glacier (Men's - Women's)12/-11ReviewDown7001413,482N/AN/A3.6 oz 50D polyesterNoYesNoAround TownRegular880 g / 1 lb 15 oz79 cm / 31 inNo
Arc'teryx Thorium AR 2020 (Men's - Women's)14/-10ReviewDown7501303,439Coreloft80 + 140 g/m²Arato 30NoNoYesAll RoundRegular490 g / 1 lb 1.3 oz72 cm / 28.3 inYes
Patagonia Fitz Roy (Men's - Women's)14/-10Down8001283,612N/AN/A20D NylonNoNoYesAll RoundRegular632 g / 1lb 6.3 oz74 cm / 29 inNo
Arc'teryx Sensa (Women's)14/-10ParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LNoYesNoAround TownRelaxed785 g / 1 lb 11.7 oz86 cm / 34 inYes
Arc'teryx Ralle (Men's)14/-10ParkaN/AN/AN/ACoreloft120 g/m²N80p-X 2L Gore-TexNoYesNoAround TownRegular735 g / 1 lb 9.9 oz83 cm / 32.5 inNo
Patagonia Hi-Loft (Men's - Women's)14/-10ReviewDown6001773,746N/AN/A1.4 oz 30D polyesterNoNoYesAll RoundRegular540 g / 1 lb 3 oz76 cm / 30 inYes
Arc'teryx Coelle (Women's)14/-10ParkaN/AN/AN/ACoreloft80 + 140 g/m²40D 2L Gore-TexNoYesNoAround TownRegular?95 cm / 37.4 inNo
REI Magma 850 Hoodie 2.0 (Men's - Women's)14/-10Down8501203,598N/AN/APertex mini ripstop nylonNoNoYesAll RoundRegular340 g / 13.75 oz74 cm / 29.25 inNo
Arc'teryx Beta Insulated Coat (Women's)16/-9ReviewParkaN/AN/AN/ACoreloft 80 g/m² + 120 g/m²2L 40D Gore-TexNoYesNoAround TownRegular600 g / 1 lb 5.2 oz86 cm / 34 inNo
Arc'teryx Atom Heavyweight (aka AR) (Men's - Women's)18/-8ReviewSyntheticN/AN/AN/ACoreloft Continuous120 g/m2 + 80 g/m2 + 60 g/m230D TyonoYes, meshNoNoAll RoundRegular475 g / 1 lb 74 cm / 29.1 inNo
Patagonia Downdrift (Men's - Women's)18/-8Down6002795,905N/AN/A4.2 oz polyesterNoNoNoAround TownRegular1.014 kg / 2 lb 3.8 oz?No
Arc'teryx Magnus (Men's)19/-7ParkaN/AN/AN/ACoreloft80 gN60p Gore-Tex 2LNoNoNoAround TownRegular690 g / 1 lb 8.3 oz83 cm / 32.5 inYes
Rab Infinity Microlight (Men's - Women's)19/-7Down7001463,605N/AN/A13D Gore-Tex InfiniumNoNoYesAll RoundRegular452 g / 15.9 oz74 cm / 29.1 inNo
Arc'teryx Proton Heavyweight (Men's - Women's)21/-6ReviewSyntheticN/AN/AN/ACoreloft100 g/m2 + 60 g/m2Fortius Air 50NoNoNoAll RoundRegular540 g / 1 lb 3 oz77 cm / 30.5 inNo
Arc'teryx Agrium (Men's - Women's)21/-6Down8501173,508N/AN/AAratoNoNoYesAll RoundRegular365 g / 12.9 oz75 cm / 29.5 inYes
Arc'teryx Beta Insulated (Men's - Women's)21/-6ReviewParkaN/AN/AN/ACoreloft Continuous80 g/m²2L 40D Gore-TexYes, zipsYesNoAll RoundRegular680 g / 1 lb 8 oz78.5 cm / 31 inNo
Arc'teryx Patera (Women's)21/-6ReviewParka750671,773Coreloft60 + 80 g/m²2L Gore-TexNoYesNoAround TownTrim867 g / 1 lb 14.6 oz99 cm / 39 inNo
Patagonia Topley (Men's)23/-5Down7001724,247N/AN/A6 oz polyesterNoYesNoAll RoundRegular1.133 kg / 2 lb 8 oz77 cm / 30.5 inNo
Arc'teryx Alpha IS (Men's)23/-5SyntheticN/AN/AN/ACoreloft Continuous65 g/m²N40p-X 2L Gore-TexNoYesYesClimbingRegular610 g / 1 lb 5.5 oz78 cm / 30.75 inYes
Patagonia Down Sweater (Men's - Women's)23/-5ReviewDown8001504,233N/AN/A1.4 oz 20x30D polyesterNoNoYesAll RoundRegular428 g / 15.1 oz67 cm / 26.25 inNo
Arc'teryx Epsilon (Men's)26/-3SyntheticN/AN/AN/ACoreloft Compact80 g/m²Fortius 1.0NoNoNoAround TownRegular644 g / 1 lb 6.7 oz?No
Patagonia Silent Down (Men's - Women's)26/-3ReviewDown7001092,691N/AN/A2.2 oz polyesterNoNoNoAround TownRegular585 g / 1 lb 4.7 oz74 cm / 29 inNo
Arc'teryx Therme Insulated (Men's)26/-3ReviewSyntheticN/AN/AN/ACoreloft Compact40 g/m²2L Gore-TexNoNoNoAround TownRegular960 g / 2 lb 1.9 oz73 cm / 28.75 inYes
Arc'teryx Cerium (aka LT) (Men's - Women's)26/-3ReviewDown8501133,388Coreloft80 + 100 g/m²Arato 15NoNoYesAll RoundTrim335 g / 11.8 oz72 cm / 28.3 inNo
Mountain Hardwear GW/2 (Men's - Women's)28/-2Down800852,399N/AN/A10D Ripstop NylonNoNoYesAll RoundTrim250 g / 8.8 oz70 cm / 27.5 inNo
Arc'teryx Cerium LT 2020 (Men's - Women's)28/-2ReviewDown8501023,058Coreloft80 + 100 g/m²Arato 10NoNoYesAll RoundTrim305 g / 10.8 oz72 cm / 28.3 inYes
Arc'teryx Nuclei (aka FL) (Men's - Women's)32/0ReviewSyntheticN/AN/AN/ACoreloft Continuous65 g/m²Arato 10rNoNoYesAll RoundRegular325 g / 11.5 oz75 cm / 29.5 inNo
Patagonia DAS Light (Men's - Women's)34/1ReviewSyntheticN/AN/AN/APlumaFill65 g10D Pertex Quantum ProNoYesYesAll RoundRegular320 g / 11.3 oz77 cm / 30.5 inNo
Patagonia Isthmus (Men's)36/2ParkaN/AN/AN/AThermoGreen60 g4.2 oz polyesterNoNoNoAround TownRegular895 g / 1 lb 15.6 oz70 cm / 27.5 inNo
Patagonia AlpLight (Men's - Women's)36/2Down8001002,822N/AN/A0.8 oz 10D polyesterNoNoYesAll RoundSlim270 g / 9.5 oz74 cm / 29 inNo
Arc'teryx Proton (aka LT) (Men's - Women's)37/3ReviewSyntheticN/AN/AN/ACoreloft Compact80 g/m2 + 60 g/m2Fortius Air 20NoNoNoClimbingTrim375 g / 13.2 oz75 cm / 29.4 inNo
Patagonia Nano Puff (Men's - Women's)37/3ReviewSyntheticN/AN/AN/APrimaLoft Gold Insulation Eco60 g22D PolyesterNoNoYesAll RoundRegular363 g / 12.8 oz71.5 cm / 28 inNo
Arc'teryx Norvan SL Ins. (Men's - Women's)39/4ShellN/AN/AN/ACoreloft Compact40 g/m²Gore-Tex ShakeDryNoNoYesRunningTrim270 g / 9.5 oz71.5 cm / 28.1 inYes
Patagonia Micro Puff (Men's - Women's)41/5ReviewSyntheticN/AN/AN/APlumaFill65 gPertex QuantumNoNoYesAll RoundRegular298 g / 10.5 oz75 cm / 29.5 inNo
Patagonia Nano Air (Men's - Women's)41/5ReviewSyntheticN/AN/AN/AFullRange60 g33D nylon ripstopNoNoYesAll RoundTrim318 g / 11.2 oz?No
Arc'teryx Atom (aka LT) (Men's - Women's)43/6ReviewSyntheticN/AN/AN/ACoreloft Continuous60 g/m²20D TyonoYes, meshNoNoAll RoundTrim375 g / 13.2 oz74 cm / 29.1 inNo
Arc'teryx Cerium Lightweight (aka SL) (Women's)43/6ReviewDown850581,739Coreloft40 + 100 g/m²Arato 7NoNoYesAll RoundTrim215 g / 7.6 oz69 cm / 27.2 in No
Arc'teryx Cerium Hybrid (Men's)44/7Down850441,319Coreloft40 + 100 g/m²Arato 15 + Fortius Air 50NoNoYesAll RoundTrim260 g / 9.2 oz70 cm / 27.5 inNo
Arc'teryx Proton Hybrid (Men's - Women's)46/8ReviewSyntheticN/AN/AN/ACoreloft Compact40 g/m²Fortius Air 50NoNoNoAll RoundTrim365 g / 12.9 oz76 cm / 30 inNo
Arc'teryx Proton Lightweight (aka FL) (Men's - Women's)48/9ReviewSyntheticN/AN/AN/AOcta Loft94 g/m²Fortius Air 20NoNoNoClimbingTrim343 g / 12.1 oz75 cm / 29.5 inNo
Patagonia Nano Air Light Hybrid (Men's - Women's)50/10SyntheticN/AN/AN/AFullRange40 g20D nylon ripstopNoNoNoAll RoundTrim335 g / 11.8 oz?No
Arc'teryx Atom Lightweight (aka SL) (Men's - Women's)52/11ReviewSyntheticN/AN/AN/ACoreloft Compact40 g/m²20D TyonoYes, meshNoNoAll RoundTrim270 g / 9.5 oz72 cm / 28.3 inNo
 

Assumptions: Worn over a thin shirt, no output, no precipitation, light to no wind. Values are always for size M and for men's, except for women's-only items. 

Primary use of this spectrum is for comparison, rather than figuring out absolute temp ratings. 

  • Working principles of insulated jackets: https://outdoorcrunch.com/jackets/ 
  • CLO Values: https://outdoorcrunch.com/clo-values/ 
  • Best Arc'teryx jackets: https://outdoorcrunch.com/best-arcteryx-jacket/ 
  • Best sellers (new pages)
    • https://arcteryx.com/us/en/c/mens/p/best-sellers
    • https://arcteryx.com/us/en/c/womens/p/best-sellers
  • Performance ratings of Arc'teryx synthetics

NameEst. Temp (F/C)BreathabilityWind Res.Abrasion res.ReviewTypeSynthetic FillSynth. Fill WeightFace FabricPit venting?Two way zipper?Stuffs into itself?ActivityFitWeightLength (CB)Discontinued?Internal pocketsExternal pockets
Arc'teryx Alpha (Men's - Women's)-18/-28No dataNo dataNo dataReviewDownCoreloft90 g/m²N30r 2L GoreTex InfiniumNoYesYesClimbingRegular805 g / 1 lb 12.4 oz86 cm / 34 inNo
Feathered Friends Khumbu-17/-27No dataNo dataNo dataDownPrimaloft Gold200 gPretex Shield XTNoNoYesAll RoundRegular960 g / 2 lb 2 oz?No
Arc'teryx Ceres SV (Men's - Women's)-15/-26No dataNo dataNo dataReviewDownCoreloft?Arato 30NoYesYesAll RoundRegular880 g / 1 lb 15 oz86 cm / 34 inYes
Mountain Equipment K7 (Men's)-13/-25No dataNo dataNo dataDownN/AN/A30D DriliteNoYesYesAll RoundRegular820 g / 1 lb 13 oz76 cm / 30 inNo
Rab Positron Pro (Men's)-13/-25No dataNo dataNo dataDownN/AN/A40D Pertex Quantum ProNoYesYesAll RoundRegular740 g / 1 lb 10 oz85 cm / 33.5 inNo
Arc'teryx Therme SV (Men's)-11/-24No dataNo dataNo dataReviewParkaCoreloft60 g/m²2L Gore-TexNoYesNoAround TownRegular1.072 kg / 2 lb 5.8 oz96 cm / 37.75 inNo
Patagonia Grade VII-11/-24No dataNo dataNo dataDownN/AN/A1.2 oz 15 & 20D Pertex QuantumNoYesNoAround TownRegular743 g / 1 lb 10.1 oz83 cm / 32.5 inYes
Patagonia AlpLoft (Men's - Women's)-10/-23No dataNo dataNo dataDownN/AN/APertex QuantomNoYesYesAll RoundRegular680 g / 1 lb 8 oz81 cm / 31.8 inNo
Arc'teryx Firebee AR (Men's - Women's)-10/-238/1010/10No dataReviewDownN/AN/AArato 7 & 10NoYesYesAll RoundRegular680 g / 1 lb 8 oz79 cm / 31 inYes
Mountain Equipment Exo (Men's)-10/-23No dataNo dataNo dataDownN/AN/ANylonNoYesYesAll RoundRegular770 g / 1 lb 11.2 oz79 cm / 31 inNo
Arc'teryx Thorsen (Men's)-7/-22No dataNo dataNo dataReviewParkaCoreloft60 g/m²90D 2L Gore-TexNoYesNoAround TownRegular1.1 kg / 2 lb 5.4 oz91 cm / 36 inYes
Patagonia Frozen Range (Men's - Women's)-6/-21No dataNo dataNo dataReviewParkaN/AN/A4 oz 75-denier polyesterNoNoNoAround TownRegular1.253 kg / 2 lb 12.2 oz84 cm / 33 inYes
Mountain Equipment Li. Ec. (Men's - Women's)-5/-20No dataNo dataNo dataDownN/AN/A50D DriliteNoYesNoAll RoundRegular822 g / 1 lb 13 oz72 cm / 28 inYes
Arc'teryx Thorium Parka (Women's)-2/-19No dataNo dataNo dataReviewDownCoreloft80 + 140 g/m²Arato 20NoYesNoAround TownRegular610 g / 1 lb 5.5 oz115.8 cm / 45.6 inNo
Rab Neutrino Pro (Men's - Women's)-2/-19No dataNo dataNo dataDownN/AN/A20D Pertex Quantum ProNoYesYesAll RoundRegular585 g / 1 lb 8.6 oz77 cm / 30.3 inNo
Arc'teryx Patera Long (Women's)0/-18No dataNo dataNo dataParkaCoreloft60 + 80 g/m²2L Gore-TexNoYesNoAround TownRegular1.1 kg / 2 lb 6.8 oz117.5 cm / 46.25 inNo
Patagonia Stormshadow (Men's)0/-18No dataNo dataNo dataParkaN/AN/A75D PolyesterNoNoNoAround TownRegular1.182 kg / 2 lb 9.7 oz?No
Arc'teryx Beta Down Insulated (Men's)0/-18No dataNo dataNo dataParkaCoreloft80 g/m²2L 40D Gore-TexYesYesNoAll RoundRegular760 g / 1 lb 10.8 oz79 cm / 31 inNo
Arc'teryx Dually Belay (Men's)0/-18No dataNo dataNo dataReviewSyntheticThermaTek92 g/m²30D NylonNoYesYesAround TownRegular705 g / 1 lb 9 oz84 cm / 33 inYes
Arc'teryx Centrale (Women's)0/-18No dataNo dataNo dataReviewParkaCoreloft60 g/m²N90p NylonNoYesNoAround TownRegular885 g / 1 lb 15.2 oz95 cm / 37.5 inYes
Arc'teryx Thorium SV Parka (Men's)0/-18No dataNo dataNo dataDownCoreloft80 + 140 g/m²Arato 30 & 2L Gore-Tex InfiniumNoYesNoAround TownRegular685 g / 1 lb 8.2 oz85 cm / 33.5 inNo
Arc'teryx Camosun (Men's)0/-18No dataNo dataNo dataReviewParkaCoreloft140 g/m²N150p-X Gore-TexNoNoNoAround TownTrim960 g / 2 lb 1.9 oz80 cm / 31.5 inYes
Arc'teryx Cerium SV (Men's - Women's)0/-18No dataNo dataNo dataReviewDownCoreloft80 + 140 g/m²Arato 7 & 10NoNoYesAll RoundRegular415 g / 14.6 oz69.5 cm / 27.4 inYes
Arc'teryx Liatris Parka (Women's)2/-17No dataNo dataNo dataParkaClimashield80 g/m2 + 60 g/m270D 3L Gore-TexNoNoNoAround TownRegular1.093 kg / 2 lb 6.6 oz109 cm / 43 inNo
Arc'teryx Revet (Men's)2/-17No dataNo dataNo dataParkaN/AN/A20d nylon/spandex double weaveNoYesNoAround TownRegular755 g / 1 lb 10.6 oz91 cm / 36 inYes
Arc'teryx Thorium SV (Men's)3/-16No dataNo dataNo dataDownCoreloft80 + 140 g/m²Arato 30 & 2L Gore-Tex InfiniumNoYesYesAround TownRegular645 g / 1 lb 6.8 oz73 cm / 28.75 inNo
Arc'teryx Piedmont (Men's)3/-16No dataNo dataNo dataParkaN/AN/AArato 10NoYesYesAround TownRegular515 g / 1 lb 2.2 oz82 cm / 32.25 inYes
Outdoor Research Sup. Alp. (Men's - Women's)3/-16No dataNo dataNo dataDownN/AN/A30D Pertex Quantum ProNoYesNoAll RoundRegular825 g / 1 lb 13.1 oz85 cm / 33.5 inNo
Arc'teryx Fission SV (Men's - Women's)3/-163/10No dataNo dataReviewSyntheticCoreloft Continuous90 + 65 g/m²N80p-X Gore-Tex 2LNoYesNoAll RoundRegular890 g / 1 lb 15.4 oz81 cm / 31.8 inYes
Arc'teryx Alessa Long3/-16No dataNo dataNo dataParkaCoreloft80 + 120 g/m²N90p 2L Gore-TexNoNoNoAround TownRegular1.015 kg / 2 lb 3.8 oz123 cm / 48.5 inYes
Arc'teryx Radsten Parka (Men's)3/-16No dataNo dataNo dataParkaCoreloft Compact120 g/m²NP100d Gore-Tex 2LNoNoNoAround TownRegular745 g / 1 lb 10.3 oz82 cm / 32.25 inYes
Rab Electron Pro (Men's - Women's)5/-15No dataNo dataNo dataDownN/AN/A20D Pertex Quantum ProNoYesYesAll RoundRegular525 g / 1 lb 2.5 oz74 cm / 29 inNo
Rab Infinity Alpine (Men's)5/-15No dataNo dataNo dataDownN/AN/A30D & 13D Gore-Tex InfiniumNoYesYesAll RoundRegular551 g / 1 lb 3.4 oz76.5 cm / 30.1 inNo
Arc'teryx Alpha Lightweight (Men's - Women's)5/-15No dataNo dataNo dataDownCoreloft Compact40 g/m²Hadron 2L Gore-Tex InfiniumNoYesYesClimbingRegular540 g / 1 lb 3 oz79.5 cm / 31.25 inNo
Arc'teryx Therme Parka (Men's)5/-15No dataNo dataNo dataReviewParkaCoreloft60 + 80 g/m²P75d PolyesterNoYesNoAround TownRegular991 g / 2 lb 3 oz85 cm / 33.5 inNo
Arc'teryx Liatris (Women's)5/-15No dataNo dataNo dataParkaClimashield80 g/m2 + 60 g/m270D 3L Gore-TexNoNoNoAround TownRegular890 g / 1 lb 15.4 oz75 cm / 29.5 inNo
Arc'teryx Macai (Men's)5/-15No dataNo dataNo dataReviewShellCoreloft Compact60 + 100 g/m²N40p-X 3L Gore-TexYes, zipsNoNoSki/SnowboardRegular1 kg / 2 lb 4 oz76 cm / 30 inNo
Arc'teryx Nuclei SV (Men's - Women's)5/-151/1010/102/10ReviewSyntheticCoreloft Continuous190 g/m2 + 90 g/m2Arato 15NoYesYesAll RoundRegular600 g / 1 lb 5.2 oz81 cm / 31.8 inNo2x dump1x chest
Black Diamond Access Down (Men's - Women's)7/-14No dataNo dataNo dataDownN/AN/A30D ripstop nylonNoYesYesAll RoundRegular442 g / 15.6 oz76 cm / 29.75 inNo
Arc'teryx Kappa (Men's)7/-14No data9/109/10ReviewSyntheticCoreloft Continuous140 g/m²N70p Gore ThermiumNoYesNoAll RoundRegular755 g / 1 lb 10.6 oz80 cm / 31.5 inYes
Patagonia Jackson Glacier Parka (Men's - Women's)7/-14No dataNo dataNo dataParkaN/AN/A50D PolyesterNoNoNoAround TownRegular1.142 kg / 2 lb 8.3 oz?No
Arc'teryx Prema Down Coat (Women's)7/-14No dataNo dataNo dataParkaN/AN/ANylonNoYesNoAround TownRegular794 g / 1 lb 12 oz117 cm / 46.1 inYes
Arc'teryx Radsten Insulated (Men's)7/-14No dataNo dataNo dataParkaCoreloft Compact120 g/m²NP100d Gore-Tex 2LNoNoNoAround TownRegular715 g / 1 lb 9.2 oz73 cm / 28.75 inYes
Rab Microlight Alpine (Men's - Women's)7/-14No dataNo dataNo dataDownN/AN/A30D Pertex QuantumNoNoYesAll RoundRegular466 g / 1 lb 0.5 oz72 cm / 28.5 inNo
Feathered Friends Eos8/-13No dataNo dataNo dataDownN/AN/APertex QuantumNoNoYesAll RoundRegular306 g / 10.8 oz?No
Patagonia Macro Puff (Men's - Women's)8/-13No dataNo dataNo dataReviewSyntheticPlumaFill135 + 90 g10D Recycled nylon ripstopNoNoNoAll RoundRegular435 g / 15.3 oz79 cm / 31 inYes
Arc'teryx Macai Lightweight (aka LT) (Men's)8/-13No dataNo dataNo dataShellCoreloft Compact60 g/m²N40p-X 3L Gore-TexYes, zipsNoNoSki/SnowboardRegular855 g / 1 lb 14.2 oz74 cm / 29.1 inNo
Patagonia Tres 3-in-1 (Men's - Women's)8/-13No dataNo dataNo dataReviewParkaN/AN/A5.5 oz polyesterNoNoNoAround TownRegular1.307 kg / 2 lb 14.1 oz85 cm / 33.5 inNo
Arc'teryx Seyla (Women's)8/-13No dataNo dataNo dataParkaN/AN/AArato 10NoYesNoAround TownRegular507 g / 1 lb. 1.9 oz.87 cm / 34.4 inYes
Arc'teryx Koda (Men's)8/-13No dataNo dataNo dataParkaCoreloft80 + 140 g/m²N80p-X Gore-TexNoNoNoAround TownRegular720 g / 1 lb 9.4 oz75 cm / 29.5 inYes
Patagonia DAS (Men's - Women's)10/-121/109/103/10ReviewSyntheticPrimaLoft Gold Insulation Eco133 + 40 gPertex Quantum ProNoYesYesAll RoundRegular555 g / 1 lb 3.6 oz84 cm / 33 inNo2x dump1x chest
Patagonia Vosque 3-in-1 (Women's)10/-12No dataNo dataNo dataReviewParkaThermoLite100 g65% nylon, 35% polyesterNoNoNoAround TownRegular1.360 kg / 3 lb90 cm / 35.5 inNo
Arc'teryx Thorium (Men's - Women's)12/-11No dataNo dataNo dataReviewDownCoreloft80 + 140 g/m²Arato 30NoYesYesAll RoundRegular517 g / 1 lb 2.2 oz71.5 cm / 28.1 inNo
Patagonia City Storm Down (Men's - Women's)12/-11No dataNo dataNo dataParkaN/AN/A4.2 oz polyesterNoNoYesAll RoundRegular468 g / 16.5 oz91 cm / 36 inYes
Patagonia Jackson Glacier (Men's - Women's)12/-11No dataNo dataNo dataReviewDownN/AN/A3.6 oz 50D polyesterNoYesNoAround TownRegular880 g / 1 lb 15 oz79 cm / 31 inNo
Arc'teryx Thorium AR 2020 (Men's - Women's)14/-10No dataNo dataNo dataReviewDownCoreloft80 + 140 g/m²Arato 30NoNoYesAll RoundRegular490 g / 1 lb 1.3 oz72 cm / 28.3 inYes
Patagonia Fitz Roy (Men's - Women's)14/-10No dataNo dataNo dataDownN/AN/A20D NylonNoNoYesAll RoundRegular632 g / 1lb 6.3 oz74 cm / 29 inNo
Arc'teryx Sensa (Women's)14/-10No dataNo dataNo dataParkaCoreloft Compact120 g/m²NP100d Gore-Tex 2LNoYesNoAround TownRelaxed785 g / 1 lb 11.7 oz86 cm / 34 inYes
Arc'teryx Ralle (Men's)14/-10No dataNo dataNo dataParkaCoreloft120 g/m²N80p-X 2L Gore-TexNoYesNoAround TownRegular735 g / 1 lb 9.9 oz83 cm / 32.5 inNo
Patagonia Hi-Loft (Men's - Women's)14/-10No dataNo dataNo dataReviewDownN/AN/A1.4 oz 30D polyesterNoNoYesAll RoundRegular540 g / 1 lb 3 oz76 cm / 30 inYes
Arc'teryx Coelle (Women's)14/-10No dataNo dataNo dataParkaCoreloft80 + 140 g/m²40D 2L Gore-TexNoYesNoAround TownRegular?95 cm / 37.4 inNo
REI Magma 850 Hoodie 2.0 (Men's - Women's)14/-10No dataNo dataNo dataDownN/AN/APertex mini ripstop nylonNoNoYesAll RoundRegular340 g / 13.75 oz74 cm / 29.25 inNo
Arc'teryx Beta Insulated Coat (Women's)16/-9No dataNo dataNo dataReviewParkaCoreloft 80 g/m² + 120 g/m²2L 40D Gore-TexNoYesNoAround TownRegular600 g / 1 lb 5.2 oz86 cm / 34 inNo
Arc'teryx Atom Heavyweight (aka AR) (Men's - Women's)18/-84/108/108/10ReviewSyntheticCoreloft Continuous120 g/m2 + 80 g/m2 + 60 g/m230D TyonoYes, meshNoNoAll RoundRegular475 g / 1 lb 74 cm / 29.1 inNo1x chest-
Patagonia Downdrift (Men's - Women's)18/-8No dataNo dataNo dataDownN/AN/A4.2 oz polyesterNoNoNoAround TownRegular1.014 kg / 2 lb 3.8 oz?No
Arc'teryx Magnus (Men's)19/-7No dataNo dataNo dataParkaCoreloft80 gN60p Gore-Tex 2LNoNoNoAround TownRegular690 g / 1 lb 8.3 oz83 cm / 32.5 inYes
Rab Infinity Microlight (Men's - Women's)19/-7No dataNo dataNo dataDownN/AN/A13D Gore-Tex InfiniumNoNoYesAll RoundRegular452 g / 15.9 oz74 cm / 29.1 inNo
Arc'teryx Proton Heavyweight (Men's - Women's)21/-66/107/1010/10ReviewSyntheticCoreloft100 g/m2 + 60 g/m2Fortius Air 50NoNoNoAll RoundRegular540 g / 1 lb 3 oz77 cm / 30.5 inNo2x dump2x chest
Arc'teryx Agrium (Men's - Women's)21/-6No dataNo dataNo dataDownN/AN/AAratoNoNoYesAll RoundRegular365 g / 12.9 oz75 cm / 29.5 inYes
Arc'teryx Beta Insulated (Men's - Women's)21/-6No dataNo dataNo dataReviewParkaCoreloft Continuous80 g/m²2L 40D Gore-TexYes, zipsYesNoAll RoundRegular680 g / 1 lb 8 oz78.5 cm / 31 inNo
Arc'teryx Patera (Women's)21/-6No dataNo dataNo dataReviewParkaCoreloft60 + 80 g/m²2L Gore-TexNoYesNoAround TownTrim867 g / 1 lb 14.6 oz99 cm / 39 inNo
Patagonia Topley (Men's)23/-5No dataNo dataNo dataDownN/AN/A6 oz polyesterNoYesNoAll RoundRegular1.133 kg / 2 lb 8 oz77 cm / 30.5 inNo
Arc'teryx Alpha IS (Men's)23/-5No dataNo dataNo dataSyntheticCoreloft Continuous65 g/m²N40p-X 2L Gore-TexNoYesYesClimbingRegular610 g / 1 lb 5.5 oz78 cm / 30.75 inYes
Patagonia Down Sweater (Men's - Women's)23/-5No dataNo dataNo dataReviewDownN/AN/A1.4 oz 20x30D polyesterNoNoYesAll RoundRegular428 g / 15.1 oz67 cm / 26.25 inNo
Arc'teryx Epsilon (Men's)26/-3No dataNo dataNo dataSyntheticCoreloft Compact80 g/m²Fortius 1.0NoNoNoAround TownRegular644 g / 1 lb 6.7 oz?No1x chest-
Patagonia Silent Down (Men's - Women's)26/-3No dataNo dataNo dataReviewDownN/AN/A2.2 oz polyesterNoNoNoAround TownRegular585 g / 1 lb 4.7 oz74 cm / 29 inNo
Arc'teryx Therme Insulated (Men's)26/-3No dataNo dataNo dataReviewSyntheticCoreloft Compact40 g/m²2L Gore-TexNoNoNoAround TownRegular960 g / 2 lb 1.9 oz73 cm / 28.75 inYes
Arc'teryx Cerium (aka LT) (Men's - Women's)26/-3No dataNo dataNo dataReviewDownCoreloft80 + 100 g/m²Arato 15NoNoYesAll RoundTrim335 g / 11.8 oz72 cm / 28.3 inNo
Mountain Hardwear GW/2 (Men's - Women's)28/-2No dataNo dataNo dataDownN/AN/A10D Ripstop NylonNoNoYesAll RoundTrim250 g / 8.8 oz70 cm / 27.5 inNo
Arc'teryx Cerium LT 2020 (Men's - Women's)28/-2No dataNo dataNo dataReviewDownCoreloft80 + 100 g/m²Arato 10NoNoYesAll RoundTrim305 g / 10.8 oz72 cm / 28.3 inYes
Arc'teryx Nuclei (aka FL) (Men's - Women's)32/02/109/102/10ReviewSyntheticCoreloft Continuous65 g/m²Arato 10rNoNoYesAll RoundRegular325 g / 11.5 oz75 cm / 29.5 inNo2x dump-
Patagonia DAS Light (Men's - Women's)34/12/108/102/10ReviewSyntheticPlumaFill65 g10D Pertex Quantum ProNoYesYesAll RoundRegular320 g / 11.3 oz77 cm / 30.5 inNo-1x chest
Patagonia Isthmus (Men's)36/2No dataNo dataNo dataParkaThermoGreen60 g4.2 oz polyesterNoNoNoAround TownRegular895 g / 1 lb 15.6 oz70 cm / 27.5 inNo
Patagonia AlpLight (Men's - Women's)36/2No dataNo dataNo dataDownN/AN/A0.8 oz 10D polyesterNoNoYesAll RoundSlim270 g / 9.5 oz74 cm / 29 inNo
Arc'teryx Proton (aka LT) (Men's - Women's)37/37/107/108/10ReviewSyntheticCoreloft Compact80 g/m2 + 60 g/m2Fortius Air 20NoNoNoClimbingTrim375 g / 13.2 oz75 cm / 29.4 inNo-1x chest
Patagonia Nano Puff (Men's - Women's)37/34/106/106/10ReviewSyntheticPrimaLoft Gold Insulation Eco60 g22D PolyesterNoNoYesAll RoundRegular363 g / 12.8 oz71.5 cm / 28 inNo1x chest-
Arc'teryx Norvan SL Ins. (Men's - Women's)39/4No dataNo dataNo dataShellCoreloft Compact40 g/m²Gore-Tex ShakeDryNoNoYesRunningTrim270 g / 9.5 oz71.5 cm / 28.1 inYes
Patagonia Micro Puff (Men's - Women's)41/55/106/105/10ReviewSyntheticPlumaFill65 gPertex QuantumNoNoYesAll RoundRegular298 g / 10.5 oz75 cm / 29.5 inNo2x dump-
Patagonia Nano Air (Men's - Women's)41/57/105/105/10ReviewSyntheticFullRange60 g33D nylon ripstopNoNoYesAll RoundTrim318 g / 11.2 oz?No-2x chest
Arc'teryx Atom (aka LT) (Men's - Women's)43/69/106/107/10ReviewSyntheticCoreloft Continuous60 g/m²20D TyonoYes, meshNoNoAll RoundTrim375 g / 13.2 oz74 cm / 29.1 inNo1x chest-
Arc'teryx Cerium Lightweight (aka SL) (Women's)43/6No dataNo dataNo dataReviewDownCoreloft40 + 100 g/m²Arato 7NoNoYesAll RoundTrim215 g / 7.6 oz69 cm / 27.2 in No
Arc'teryx Cerium Hybrid (Men's)44/7No dataNo dataNo dataDownCoreloft40 + 100 g/m²Arato 15 + Fortius Air 50NoNoYesAll RoundTrim260 g / 9.2 oz70 cm / 27.5 inNo
Arc'teryx Proton Hybrid (Men's - Women's)46/85/108/108/10ReviewSyntheticCoreloft Compact40 g/m²Fortius Air 50NoNoNoAll RoundTrim365 g / 12.9 oz76 cm / 30 inNo-1x chest
Arc'teryx Proton Lightweight (aka FL) (Men's - Women's)48/98/104/107/10ReviewSyntheticOcta Loft94 g/m²Fortius Air 20NoNoNoClimbingTrim343 g / 12.1 oz75 cm / 29.5 inNo-1x chest
Patagonia Nano Air Light Hybrid (Men's - Women's)50/10No dataNo dataNo dataSyntheticFullRange40 g20D nylon ripstopNoNoNoAll RoundTrim335 g / 11.8 oz?No
Arc'teryx Atom Lightweight (aka SL) (Men's - Women's)52/1110/102/107/10ReviewSyntheticCoreloft Compact40 g/m²20D TyonoYes, meshNoNoAll RoundTrim270 g / 9.5 oz72 cm / 28.3 inNo--
 

Performance data axis of synthetic jackets (this table) and shell jackets (table below) are different. Don't compare them. 

  • Best synthetic insulated jackets: https://outdoorcrunch.com/synthetic-insulated-jackets/
  • Performance ratings of Arc'teryx shells

NameActivityBreathabilityWeather Res.DurabilityPackabilityTemp (F/C)Bottom lineReviewPit zips?Two way zipper?Stuffs into itself?Hood?Face FabricFitWeightLengthDiscontinued?
Alpha FL (Men's - Women's)Climbing7/10No dataNo data10/10N/ANoNoYesHadron 3L Gore-TexTrim209 g / 7.4 oz76.5 cm / 30 inYes
Alpha SL (Men's - Women's)Climbing5/107/10No data9/10N/ANoNoYesN40p 3L Gore-TexTrim326 g / 11.5 oz77.5 cm / 30.5 inYes
Alpha (aka AR) (Men's - Women's)Climbing8/109/108/104/10N/AGo-to climbing harshell. ReviewYesNoNoN40d & N80d Most Rugged 3L Gore-Tex ProRegular430 g / 15.2 oz79.5 cm / 31.25 inNo
Alpha SV (Men's - Women's)Climbing8/1010/1010/103/10N/AStrongest climbing hardshell. ReviewYesNoNoN100d Most Rugged 3L Gore-Tex ProRegular510 g / 1 lb 2 oz78 cm / 30.75 inNo
Alpha IS (Men's)Climbing7/105/10No data8/1023/-5NoYesYesN40p-X 2L Gore-TexRegular610 g / 1 lb 5.5 oz78 cm / 30.75 inYes
Beta (Men's - Women's)All Round6/107/107/108/10N/AStreamlined all-doer shell.ReviewNoNoNoN30p-X 3L Gore-TexTrim300 g / 10.6 oz76 cm / 30 inNo
Beta Lightweight (Men's - Women's)All Round8/107/107/106/10N/AReviewYesNoNoN40p 3L Gore-TexFitted380 g / 13.4 oz75 cm / 29.5 inNo
Beta LT (Men's - Women's)All Round7/107/108/106/10N/AReviewYesNoNoN40d 3L Gore-TexFitted395 g / 13.9 oz76 cm / 30 inNo
Beta AR (Men's - Women's)All Round8/109/109/104/10N/AGo-to all-round harshell. ReviewYesNoNoN40d & N80d Most Rugged 3L Gore-Tex ProRegular460 g / 1 lb 76 cm / 30 inNo
Beta AR StormHood (Men's - Women's)All Round8/109/109/104/10N/AReviewYesNoNoN40d & N80d Most Rugged 3L Gore-Tex ProRegular460 g / 1 lb 76 cm / 30 inNo
Beta Coat (Women's)All Round6/105/10No data5/10N/ANoYesNo3L Gore-TexRegular320 g / 11.3 oz88 cm / 34.5 inNo
Beta Insulated (Men's - Women's)All Round9/107/108/10No data21/-6Go-to hybrid jacket.ReviewYesYesNoN40d 2L Gore-TexRegular680 g / 1 lb 8 oz78.5 cm / 31 inNo
Beta Insulated Coat (Women's)All Round7/10No dataNo dataNo data16/-9NoYesNoN40d 2L Gore-TexRegular600 g / 1 lb 5.2 oz86 cm / 34 inNo
Beta Down Insulated (Men's)All Round9/107/108/10No data0/-18YesYesNo2L 40D Gore-TexRegular760 g / 1 lb 10.8 oz79 cm / 31 inNo
Beta LongAll Round4/109/10No data3/10N/AReviewNoNoNoN80p 3L Gore-TexRegular441 g / 15.6 oz85 cm / 33.5 inYes
Beta LT HadronAll Round7/106/104/105/10N/ANoNoNoHadron 3L Gore-TexFitted255 g / 9 oz76 cm / 30 inYes
Beta SV (Men's - Women's)All Round8/1010/1010/103/10N/AStrongest all-round harshell. ReviewYesNoNoN80p-X Most Rugged 3L Gore-Tex ProRegular495 g / 1 lb 1.5 oz79 cm / 31 inYes
Gamma Lw. (aka SL) (Men's - Women's)All Round7/102/106/105/10N/AReviewNoNoNoFortius 1.0Trim310 g / 10.9 oz74 cm / 29.1 inNo
Gamma (aka LT) (Men's - Women's)All Round7/103/107/103/10N/AGo-to softshell.ReviewNoNoNoWee Burly Double WeaveRegular545 g / 1 lb 3.2 oz76 cm / 30 inNo
Gamma MX (Men's - Women's)All Round6/104/108/103/10N/AStrongest softshell.ReviewNoNoNoFortius 2.0Regular555 g / 1 lb 3.6 oz74 cm / 29.1 inNo
Sabre SV (Men's)Skiing10/1010/1010/101/10N/AStrongest ski jacket.ReviewYesYesNoN100d Most Rugged 3L Gore-Tex ProRegular595 g / 1 lb 5 oz85 cm / 33.5 inNo
Sabre (Men's)Skiing8/108/107/102/10N/AReviewYesNoNoN80p-X 3L Gore-TexRegular705 g / 1 lb 8.9 oz79 cm / 31 inNo
Sabre Insulated (Men's)Skiing7/10No data6/10No dataNo dataReviewYesNoNoN80p 2L Gore-TexRegular815 g / 1 lb 12.7 oz76 cm / 30 inNo
Rush (Men's)Skiing8/109/109/103/10N/AGo-to ski jacket. ReviewYesNoNoN80p-X & N100p-X 3L Most Rugged Gore-Tex ProRegular590 g / 1 lb 4.8 oz79.5 cm / 31.25 inNo
Rush Insulated (Men's - Women's)Skiing3/105/105/109/1016/-9ReviewNoNoYesHadron 2L Gore-Tex InfiniumRegular515 g / 1 lb 2.2 oz79 cm / 31 inNo
Macai Shell (Men's)SkiingNo dataNo dataNo dataNo dataN/AReviewYesNoNoN80p-X 3L Gore-TexRegular775 g / 1 lb 11.3 oz?No
Macai (Men's)Skiing7/107/106/101/105/-15ReviewYesNoNoN40p-X 3L Gore-TexRegular990 g / 2 lb 2.9 oz75 cm / 29.5 inNo
Macai Lightweight (aka LT) (Men's)Skiing7/107/106/102/108/-13ReviewYesNoNoN40p-X 3L Gore-TexRegular855 g / 1 lb 14.2 oz?No
Theriss Down (Women's)Skiing7/106/107/102/10No dataReviewYesNoNoN80p 2L Gore-TexRegular709 g / 1 lb 9 oz63 cm / 24.8 inNo
Sentinel (Women's)Skiing8/107/107/102/10N/AGo-to ski jacket. ReviewYesNoNoN70p 3L Gore-TexRegular640 g / 1 lb 6.6 oz73.7 cm / 29 inNo
Sentinel Insulated (Women's)Skiing8/10No dataNo dataNo data21/-6ReviewYesNoNoN80p 2L Gore-TexRegular600 g / 1 lb 5.2 oz79.8 cm / 31.5 inNo
Sentinel Relaxed (Women's)SkiingNo dataNo dataNo dataNo dataN/AYesNoNoN80p 3L Gore-TexRegular655 g / 1 lb 7.1 oz?No
Sidewinder (Women's)Skiing8/108/107/102/10N/AYesNoNoN80p 3L Gore-TexRegular570 g / 1 lb 4.1 oz?No
Andessa (Women's)Skiing10/10No dataNo data1/108/-13YesNoNoN40d 3L Gore-TexTrim869 g / 1 lb 14.7 oz67 cm / 26.4 inYes
Andessa Shell (Women's)Skiing5/10No dataNo data3/10N/ANoNoNoN70p 3L Gore-TexTrim560 g / 1 lb 3.8 oz?Yes
Micon HeatherSkiingNo dataNo dataNo dataNo dataN/AYesNoNoNP100-d 3L Gore-TexRegular685 g / 1 lb 8.2 oz83 cm / 32.5 inYes
Micon (Men's)SkiingNo dataNo dataNo dataNo dataN/AYesNoNoN80p 3L Gore-TexRegular685 g / 1 lb 8.2 oz83 cm / 32.5 inYes
Cassiar (Men's)Skiing8/107/108/103/10N/AReviewYesNoNoN70p 3L Gore-TexTrim820 g / 1 lb 12.9 oz74.5 cm / 29.3 inYes
Cassiar LT (Men's)Skiing6/106/106/105/10N/AReviewYesNoNoN70p 3L Gore-TexTrim605 g / 1 lb 5.3 oz75 cm / 29.5 inYes
Ravenna (Women's)Skiing8/107/108/103/10N/AReviewYesNoNoN70s-4 3L Gore-TexTrim725 g / 1 lb 9.6 oz69.5 cm / 27.4 inYes
Ravenna LT (Women's)Skiing6/106/106/105/10N/AReviewYesNoNoN70p 3L Gore-TexTrim540 g / 1 lb 3 oz69 cm / 27.2 inYes
Procline (Men's)SkiingNo dataNo dataNo dataNo dataN/AYesNoNoN70p Gore-Tex InfiniumTrim720 g / 1 lb 9.4 oz76 cm / 30 inYes
Shashka Stretch (Women's)SkiingNo dataNo dataNo dataNo dataN/AYesNoNoN70p Gore-Tex InfiniumTrim670 g / 1 lb 7.6 oz71 cm / 28 inYes
Sabre AR (Men's)Skiing7/108/107/107/10N/AReviewYesNoNoN70p 3L Gore-TexRegular700 g / 1 lb 8.7 oz79 cm / 31 inYes
Sentinel AR (Women's)Skiing7/108/107/107/10N/AReviewYesNoNoN70p 3L Gore-TexRegular590 g / 1 lb 4.8 oz72.5 cm / 28.5 inYes
Sabre LT (Men's)Skiing7/108/107/108/10N/AReviewYesNoNoN80p 3L Gore-TexRegular660 g / 1 lb 7.3 oz83 cm / 32.5 inYes
Sentinel LT (Women's)Skiing7/108/107/108/10N/AReviewYesNoNoN80p 3L Gore-TexRegular565 g / 1 lb 3.9 oz73.5 cm / 29 inYes
Incendia (Women's)Skiing8/109/109/103/10N/AReviewYesNoNoNP100d 3L Gore-TexTrim610 g / 1 lb 5.5 oz79 cm / 31 inYes
Indencia ISSkiingNo dataNo dataNo dataNo dataNo dataYesNoNoN80p 2L Gore-TexRegular?78 cm / 30.75 inYes
Squamish (Men's - Women's)Running5/104/107/109/10N/AGo-to running jacket.ReviewNoNoYes30D TyonoTrim140 g / 4.9 oz77.5 cm / 30.5 inNo
Norvan Windshell (Men's - Women's)RunningNo dataNo dataNo dataNo dataN/ANoNoYesPermeair 20Trim90 g / 3.2 oz73 cm / 28.75 inNo
Norvan Shell (Men's - Women's)RunningNo dataNo dataNo dataNo dataN/ANoNoNo13D 3L Gore-TexTrim190 g / 6.7 oz73 cm / 28.75 inNo
Nodin (Women's)Running8/105/105/1010/10N/ANoNoYes20D TyonoTrim130 g / 4.6 oz75 cm / 29.5 inNo
Incendo Airshell (Women's)RunningNo dataNo dataNo dataNo dataN/ANoNoYes?Trim105 g / 3.7 oz?No
Incendo (Men's)Running7/104/105/1010/10N/AReviewNoNoYesLuminTrim125 g / 4.4 oz?Yes
Norvan LT (Men's - Women's)Running5/105/108/106/10N/ANoNoNoN13p 3L Gore-TexTrim190 g / 6.7 oz?Yes
Norvan SL Ins. (Women's)RunningNo dataNo dataNo dataNo data39/4NoNoYesGore-Tex ShakeDryTrim270 g / 9.5 oz71.5 cm / 28.1 inYes
Cita (Women's)Running7/104/105/1010/10N/AReviewNoNoYesLuminTrim120 g / 4.2 oz67.5 cm / 26.5 inYes
Cita SL (Women's)Running7/104/104/1010/10N/AReviewYesNoYesPermeair 20Trim65 g / 2.3 oz61.5 cm / 24.2 inYes
Incendo SL (Men's)Running7/104/104/1010/10N/AReviewNoNoYesPermair 20 & CanimTrim80 g / 2.8 oz73 cm / 28.75 inYes
Norvan SL (Men's - Women's)Running7/106/108/108/10N/AReviewNoNoYesGore-Tex InfiniumTrim120 g / 4.2 oz77 cm / 30.4 inYes
Trino SL (Men's)Running8/105/107/106/10N/AReviewNoNoNoGore-Tex InfiniumTrim340 g / 12 oz74 cm / 29.1 inYes
Trino SL Anorak (Women's)Running8/107/108/107/10N/AReviewNoNoNoGore-Tex InfiniumTrim290 g / 10.2 oz65 cm / 25.5 inYes
Solano (Women's)Around TownNo dataNo dataNo dataNo dataN/AReviewNoNoNoGore-Tex InfiniumRelaxed355 g / 12.5 oz72 cm / 28.3 inNo
Venda Anorak (Women's)Around TownNo dataNo dataNo dataNo dataN/ANoNoNoGore-TexRelaxed255 g / 9 oz75.5 cm / 29.7 inYes
Zeta FL (Men's - Women's)Hiking4/106/104/106/10N/ANoNoNoN20r 2L Gore-TexTrim221 g / 7.8 oz76 cm / 30 inYes
Zeta SL (Men's - Women's)Hiking3/105/104/105/10N/AReviewNoNoNo2L Gore-TexTrim310 g / 10.9 oz77.8 cm / 30.6 inYes
Zeta LT (Men's - Women's)Hiking5/107/108/105/10N/ANoNoNoN40P-X 3L Gore-TexTrim335 g / 11.8 oz78 cm / 30.75 inYes
Zeta AR (Men's)Hiking7/108/107/104/10N/AYesNoNo3L Gore-TexRegular425 g / 15 oz80 cm / 31.5 inYes
 

Performance data axis of synthetic jackets (table above) and shell jackets (this table) are different. Don't compare them. 

  • REI is on a rare sale. Don't miss. Patagonia's are like up to 70% off... 
    • https://www.rei.com/h/deals

Also...

  • Ceres offers a quite long hemline (34 inches). Falls almost to the knees.
  • Firebee is shorter at 31.25 inches - just a bit lower than waist.

Extra length in Ceres is one of the causes of its extra down, but even without the extra material, the amount of its down would still outnumber that of Firebee.

Warmth in practice

Generally speaking, with only a long sleeved shirt under and without a shell on top, during daily use (strolls, power walks, etc) and with enough wind to cause an umbrella to twist in your hand...

...the lowest temperature an average person could wear them without feeling uncomfortably cold would be as low as -15 deg F (-26 deg C) for Ceres SV and around -10 deg F (-23 deg C) for Firebee AR.

If you run colder or warmer than the average person, then shift these temperatures accordingly.

This level of warmth is exceptional, which is the reason for staggering price tags.

The single warmer product you can find out there would be something ridiculously high-tech like the Cold WX Parka SVX from Arc'teryx's LEAF Program.

Gore-Tex Thermium vs Windstopper

Gore Thermium of Firebee will perform quite similarly to the Gore Windstopper of Ceres (same Gore membrane technology) - the only difference being that the Thermium is fully seam sealed whereas some Windstopper pieces are sewn through seams.

In practice, this means that the Firebee will be more weather resistant and it'll let less moisture inside.

Then again neither of these Parkas are meant to be used under rain or snow anyway, so the difference isn't big to say the least.


Now back to warmth, realistically speaking, Ceres and Firebee is actually as good as jackets and parkas get in terms of warmth, as I explained a minute ago.

Bu there's one important caveat to note here.

Warmth distribution

Both the Firebee and Ceres come with their own stuff sacks. Manufacturing them "packable" like this requires sacrificing from distributing the warmth evenly throughout your body.

Firebee (on the right) is packed smaller than Ceres (on the left).

In addition to that, the Firebee is not only packable, but also a lot more packable than the Ceres. It's equivalent to the packed size of a summer sleeping bag - which is HALF the packed size of the Ceres!

Since this makes the problem even worse for Firebee, Arc'teryx incorporated "3D Down Contour Construction" in Firebee's design process.

...although it kind of backfired.

It was supposed to distribute the total amount of down more efficiently throughout the jacket rather than using a uniform distribution like that of Ceres.

BUT, as you might also already had understood from my language, this failed to side-track this problem in practice. In the end, lower arm region of the Firebee's in the market ended up providing a little bit less warmth than intended.

So, when you think about the staggering price tag of this parka, Arc'teryx might have crossed the "acceptable flaws" line with this mistake for some people.

It's still a fantastic parka and it's incredible how much of attention has been paid even to the really minimal details (pleasant collar, StormHood, mesh vents at very well-thought out strategic locations such as some portion of the hood and the arm pits).

It's just that it's mostly expected to be flawless at this price range.

If this is a deal-breaker for you, then layering Cerium SV (read review) and Atom AR (read review) together could work as a somewhat "equivalent" combo and be a good alternative to the Firebee.

Ceres SV is baggier than the Firebee (easier under layering) and is also puffier outwards.

It'd also provide more versatility since wearing Ceres, Firebee or Thorsen as standalone pieces would come too warm when it's anything warmer than 15 deg F (-10 deg C) out. Whereas you can wear your Atom AR alone when it's up to 30 deg F (0 deg C) without overheating.

The downside of layering, on the other hand, would be the hassle comes up with layering when you're changing from indoors to outdoors constantly and vice versa.

For Ceres SV, this uneven warmth distribution is experienced significantly less although still not completely non-existent like the Thorsen (more on Thorsen in a minute).

Face Fabric

Face fabric of Ceres (Arato 30) is heavier and more sturdy than that of the Firebee (Arato 7 & 10).

But, compared to the Firebee’s face properties, it doesn't feel as smooth in your hands, although is more durable and resists more strongly against abrasion.

Also, they're both DWR coated, which helps with beading water. 

  • What is DWR by the way?

DWR is a coating. 

It's basically sprayed on to the surface of these jackets as a finish. 

It stands for Durable Water Repellent - which means that water will be repelled under wet conditions instead of soaking into the fabric. 

DWR also decreases dry time. 

It's a good thing these jackets are coated in DWR.

But pay attention to the fact that DWR is a coating - meaning that it will wear off over time. 

Which is why you might want to invest in a DWR spray such as this one at arcteryx.com for after treatment. 

As you see, there's a strong correlation between FP x FW and temperature ratings, but not more than, say, 80%. I explained why this happens here in this post of mine. 

So, since some sacrifices are being made for making a parka "packable" in return...

If you aren't planning to pack your parka, I'd also check out Therme SV (Men's - read review) or Patera (Women's - read review). Unlike Ceres and Firebee, these aren't packable, and hence distributes warmth more evenly.

Another case where you'd better getting one of these and not a Firebee or Ceres would be wet conditions. Firebee and Ceres use Gore-Tex Windstopper Shell, which protects you from high winds perfectly.

But when it rains or snows, not only it let relatively more water and moisture in; but also the down gets soaked, which causes the parka to lose its insulating power. In the end, the warmth suffers - although less so than we'd typically experience with other down insulated clothing pieces such as the Thorium and Cerium.

The reason for this is strategically placed synthetic insulation in both Firebee's and Ceres's constructions.

Filed Under: Down Jackets Tagged With: Arc'teryx Ceres SV, Arc'teryx Firebee AR, arcteryx, arcteryx insulated jackets, arcteryx jackets, jackets

Reader Interactions

Comments

  1. Dom says

    October 28, 2020 at 12:44 pm

    I have 2 Ceres Sv and one Firebee. The Firebee is cut for walking to work. It’s useless if you want to lift your arms up. Or pretty much do anything except sit down.
    Arc just need to do the Ceres SV with a thermium outer instead of Windstopper. Which is warmer and yet more mobile. I guess commuters pay more than climbers for them nowadays. Shame.

  2. Bob says

    February 19, 2021 at 11:28 pm

    Damn dude, you rich if you have 2 ceres and a firebee. I’m trying to wait till theres a good discount to get the firebee

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Hey, what's up? Canberk here. A former General Electric Aviation Design Engineer. Academically involved in cold weather outdoor gear, particularly wearable heating systems using conductive polyester and polyamide yarns. Read more about me.

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