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Home / Gear / Jackets / Insulated Jackets / Synthetic Insulated Jackets

Best Synthetic Insulated Jackets

Last updated: May 12, 2023 by Canberk Koksal

  • This article is revised after Arc'teryx FW23 update. 
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This article does not go deep into the working principles of synthetic insulated jackets. If you're interested in reading more about that, check out these articles: 

  • https://outdoorcrunch.com/jackets/
  • https://outdoorcrunch.com/clo-values/

Best Synthetic Insulated Jackets: Quick Summary

Start here: https://arcteryx.com/us/en/shop/jacket-finder/

Arc'teryx is pretty much the highest quality brand when it comes to insulated and shell jackets. But where Arc'teryx shines the most is synthetic insulated jackets. 

You will, for example, come across some experienced users arguing Rab making better down jackets than Arc'teryx. But almost everybody experienced with technical outerwear will agree that Arc'teryx is the brand that manufactures the best high end synthetic insulated jackets. 

  • In hindsight, I always disagreed with Rab making better down jackets than Arc'teryx. But ever since this absolute beast dropped on FW23, I'm even more convinced. With that said, I too agree that synthetic jackets of Arc'teryx are better than their down jackets. 

The best picks here would be as follows: 

  • For stationary use: 
    • Nuclei SV (Men's)
    • Atom AR (Men's - Women's - read review)
      • How to choose between them: According to their temperature ratings and features given below. In the end though both are fantastic jackets you'll absolutely fall in love with. 
  • For high output activities: 
    • Proton LT (Men's - Women's - read review)
    • Atom LT (Men's - Women's - read review)
    • Nano Air (Men's - Women's - read review)
      • How to choose between them: Proton LT and Atom LT (read the comparison of the two) are much more alike than they're different. If you need a bit more warmth, durability and abrasion/weather resistance, get the Proton LT. If you need more breathability, get the Atom LT (side mesh panels keeps you quite a bit ventilated). If you don't want an Arc'teryx and would like to get a Patagonia instead, then get the Nano Air. It too is a stunning jacket that won't disappoint. Make sure to check out Patagonia's Web Specials page in that case: https://www.patagonia.com/shop/web-specials. 
      • Also see: Atom LT vs Proton LT vs Nano Air
  • If you want a hybrid jacket (synthetic insulated & shell):
    • Proton Hybrid Hoody (Men's - Women's - read review)
    • Beta Insulated Jacket (Men's - Women's - read review)
  • Bonus: If you're planning to use it like a down jacket that can get wet: 
    • Nuclei FL (Men's - Women's - read review)
  • Honorable mentions: 
    • Micro Puff (Men's - Women's - read review)
    • Nano Puff (Men's - Women's - read review)
      • How to choose between them: Micro Puff and Nano Puff (read the comparison of the two) are also much more alike than they're different - just like Arc'teryx's Atom LT and Proton LT. The difference between them however is even smaller than the difference of Proton LT and Atom LT. Micro Puff is a bit lighter, more packable, offers one more internal pocket and is just a little bit warmer (nothing noticeable though). Nano Puff, on the other hand, comes with a burlier face fabric, and hence is slightly more durable and weather/abrasion resistant than the Micro Puff. I however would probably get the one that I like the looks of the most. Again, make sure to check out Patagonia's Web Specials page in that case: https://www.patagonia.com/shop/web-specials.

Here's how they sort from the most to the least warm: 

Raw NameArc'teryx Nuclei SVArc'teryx Atom ARArc'teryx Beta InsulatedArc'teryx Nuclei FLPatagonia Micro PuffArc'teryx Proton LTPatagonia Nano PuffPatagonia Nano AirArc'teryx Atom LTArc'teryx Proton Hybrid
NameArc'teryx Nuclei SV (Men's)Arc'teryx Atom AR (Men's - Women's)Arc'teryx Beta Insulated (Men's - Women's)Arc'teryx Nuclei FL (Men's - Women's)Patagonia Micro Puff (Men's - Women's)Arc'teryx Proton LT (Men's - Women's)Patagonia Nano Puff (Men's - Women's)Patagonia Nano Air (Men's - Women's)Arc'teryx Atom LT (Men's - Women's)Arc'teryx Proton Hybrid (Men's - Women's)
ImageArcArcArcArcPatagonia Micro PuffArcPatagonia Nano PuffPatagonia Nano AirArcArc
Temp (°F / °C)5/-1518/-821/-632/036/237/337/341/543/646/8
Breathability8/106/10Testing5/10Testing7/10Testing7/108/10Testing
Weather Resistance8/108/10Testing7/10Testing7/10Testing5/106/10Testing
Durability6/109/10Testing6/10Testing9/10Testing6/107/10Testing
Packability8/103/10Testing8/10Testing5/10Testing10/105/10Testing
Best pick forWarmest Arc'teryx synthetic. Casual use in freezing weather.Casual use in cold weather.High output activities.
ReviewReviewReviewReviewReviewReviewReviewReviewReviewReviewReview
Pit venting?NoYes, meshYes, zipsNoNoNoNoNoYes, meshNo
Stuffs into itself?YesNoNoYesYesNoYesNoNoNo
Two way zipper?YesNoYesNoNoNoNoNoNoNo
Size Chart[Men's / Women's][Men's / Women's][Men's / Women's][Men's / Women's][Men's / Women's][Men's / Women's][Men's / Women's][Men's / Women's][Women's]
TypeSyntheticSyntheticSyntheticSyntheticSyntheticSyntheticSyntheticSyntheticSyntheticSynthetic
Fill PowerN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Fill Weight (grams)N/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
FP x FWN/AN/AN/AN/AN/AN/AN/AN/AN/AN/A
Synthetic Insulator (SI)Coreloft ContinuousCoreloft ContinuousCoreloft ContinuousCoreloft ContinuousPlumaFillCoreloft CompactPrimaLoft Gold Insulation EcoFullRangeCoreloft ContinuousCoreloft Compact
SI Amount180 g/m2 + 90 g/m2120 g/m2 + 80 g/m2 + 60 g/m280 g/m²65 g/m²65 g80 g/m2 + 60 g/m260 g60 g60 g/m²40 g/m²
Face FabricArato 1530D Tyono2L 40D Gore-TexArato 10rPertex QuantumFortius Air 2022D Polyester33D Nylon ripstop20D TyonoFortius™ Air 50
ActivityClimbingAll RoundAll RoundClimbingAll RoundClimbingAll RoundAll RoundAll RoundAll Round
FitRegularRegularRegularTrimTrimTrimRegularTrimTrimTrim
Weight600 g / 1 lb 5.2 oz475 g / 1 lb 680 g / 1 lb 8 oz325 g / 11.5 oz298 g / 10.5 oz375 g / 13.2 oz363 g / 12.8 oz318 g / 11.2 oz375 g / 13.2 oz365 g / 12.9 oz
Length (CB)81 cm / 31.8 in74 cm / 29.1 in78.5 cm / 31 in75 cm / 29.5 in75 cm / 29.5 in75 cm / 29.4 in71.5 cm / 28 in?74 cm / 29.1 in?
arc-mens-urlhttps://www.arcteryx.com/us/en/shop/mens/nuclei-sv-parkahttps://www.arcteryx.com/us/en/shop/mens/atom-ar-hoodyhttps://www.arcteryx.com/us/en/shop/mens/beta-insulated-jackethttps://www.arcteryx.com/us/en/shop/nuclei-fl-jacket/https://www.arcteryx.com/us/en/shop/mens/proton-lt-hoodyhttps://www.arcteryx.com/us/en/shop/mens/atom-lt-hoodyhttps://www.arcteryx.com/us/en/shop/mens/proton-hybrid-hoody
arc-womens-urlhttps://www.arcteryx.com/us/en/shop/womens/atom-heavyweight-hoodyhttps://www.arcteryx.com/us/en/shop/womens/beta-insulated-jackethttps://www.arcteryx.com/us/en/shop/nuclei-fl-jacket/https://www.arcteryx.com/us/en/shop/womens/proton-hoodyhttps://www.arcteryx.com/us/en/shop/womens/atom-hoodyhttps://www.arcteryx.com/us/en/shop/womens/proton-hybrid-hoody
pat-mens-urlhttps://www.patagonia.com/product/mens-micro-puff-hoody/84031.htmlhttps://www.patagonia.com/product/mens-nano-puff-hoody/84222.htmlhttps://www.patagonia.com/product/mens-nano-air-hoody/84366.html
pat-womens-urlhttps://www.patagonia.com/product/womens-micro-puff-hoody/84041.htmlhttps://www.patagonia.com/product/womens-nano-puff-hoody/84227.htmlhttps://www.patagonia.com/product/womens-nano-air-hoody/84267.html
rei-mens-urlhttps://www.rei.com/product/192513https://www.rei.com/product/135452https://www.rei.com/product/165706https://www.rei.com/product/125266https://www.rei.com/product/154873https://www.rei.com/product/102404https://www.rei.com/product/873062https://www.rei.com/product/175332
rei-womens-urlhttps://www.rei.com/product/191825https://www.rei.com/product/174718https://www.rei.com/product/165587https://www.rei.com/product/125993https://www.rei.com/product/152547https://www.rei.com/product/102353https://www.rei.com/product/870487https://www.rei.com/product/174720https://www.rei.com/product/209271
backcountry-mens-urlhttps://www.backcountry.com/patagonia-micro-puff-jacket-menshttps://www.backcountry.com/patagonia-nano-puff-insulated-jacket-menshttps://www.backcountry.com/patagonia-nano-air-insulated-jacket-mens
backcountry-womens-urlhttps://www.backcountry.com/patagonia-micro-puff-jacket-womenshttps://www.backcountry.com/patagonia-nano-puff-insulated-jacket-womenshttps://www.backcountry.com/patagonia-nano-air-insulated-jacket-womens
amazon-mens-urlhttps://www.amazon.com/Arcteryx-14648/dp/B07HR6Y2FJhttps://www.amazon.com/Arcteryx-Nuclei-FL-Jacket-Sangria/dp/B0163TBXJIhttps://www.amazon.com/Patagonia-Micro-Puff-Insulated-Jacket/dp/B002IPHAA8https://www.amazon.com/Arcteryx-Proton-Jacket-Glade-Large/dp/B08BJFXW1Jhttps://www.amazon.com/Patagonia-Nano-Air-Jacket-Underwater-Medium/dp/B01AUYMRSIhttps://www.amazon.com/Arcteryx-24109-Atom-LT-Jacket/dp/B08BJHB631
amazon-womens-urlhttps://www.amazon.com/Arcteryx-Atom-AR-Hoody-Womens/dp/B08BJFMGMShttps://www.amazon.com/Arcteryx-Jacket-Gore-Tex-Maximum-Versatility/dp/B09PNMLTV9https://www.amazon.com/Womens-Micro-Puff-Hooded-Jacket/dp/B0059SOLRQhttps://www.amazon.com/Arcteryx-Lightweight-Breathable-synthetically-Insulated/dp/B0973FDVWVhttps://www.amazon.com/Patagonia-Nano-Air-Hoody-Jacket/dp/B00OYJJL5Shttps://www.amazon.com/Arcteryx-24112-Atom-LT-Jacket/dp/B08BJFFFB4
image-urlhttps://images.arcteryx.com/F22/1350x1710/Nuclei-SV-Parka-Timelapse.jpghttps://images.arcteryx.com/F22/1350x1710/Atom-AR-Hoody-Relic.jpghttps://images.arcteryx.com/F22/1350x1710/Beta-Insulated-Jacket-Relic.jpghttps://images.arcteryx.com/F22/1350x1710/Nuclei-FL-Jacket-Black-Sapphire.jpghttps://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwa481ffc6/images/hi-res/84031_SMDB.jpg?sw=1914&sh=1914&sfrm=png&q=95&bgcolor=f5f5f5https://images.arcteryx.com/F22/1350x1710/Proton-LT-Hoody-Distortion.jpghttps://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dwdbb99842/images/hi-res/84222_BSNG.jpg?sw=1436&sh=1436&sfrm=png&q=95&bgcolor=f5f5f5https://www.patagonia.com/dw/image/v2/BDJB_PRD/on/demandware.static/-/Sites-patagonia-master/default/dw56888f67/images/hi-res/84366_TIDB.jpg?sw=1914&sh=1914&sfrm=png&q=95&bgcolor=f5f5f5https://images.arcteryx.com/F22/1350x1710/Atom-LT-Hoody-Forage.jpghttps://images.arcteryx.com/F22/1350x1710/Proton-Hybrid-Hoody-Phenom-Bordeaux.jpg
 

It's also worth mentioning the Fission SV, Kappa and Dually Belay in here. They're all as good as (in some cases maybe even better than) their cousin Nuclei SV. It's pretty disappointing to see Arc'teryx discontinue these breathtaking products. No one knows if they're coming back or not. 

It's difficult to understand this move because there really aren't lots of options in this area of the line-up (very cold synthetic wear with high weather resistance). So I hope Arc'teryx brings them back one day. I'm not losing all my hope yet because they did bring the once loved Nuclei FL back to life after many years. So it's not something that never happens! 

Best Synthetic Insulated Jackets: Full table

Learn more about most of the popular synthetic insulated jackets out there. Pick "Synthetic Jackets" from the "Type" filter in the dropdown menu of the chart below. 

  • Temperature Ratings of Insulated Jackets

NameEst. Temp (F/C)ReviewPit venting?Stuffs into itself?Two way zipper?TypeFill PowerFill Weight (grams)Fill Volume (FP x FW)Synthetic Insulator (SI)SI AmountFace FabricActivityFitWeightLength (CB)Size Chart
Arc'teryx Alpha (Men's - Women's)-18/-28ReviewNoYesYesDown850296251,600Coreloft90 g/m²N30r 2L GoreTex InfiniumClimbingRegular805 g / 1 lb 12.4 oz86 cm / 34 in[Women's]
Feathered Friends Khumbu-17/-27NoYesNoDown900378340,200Primaloft Gold200 gPretex Shield XTAll RoundRegular960 g / 2 lb 2 oz?
Arc'teryx Ceres SV (Men's - Women's)-15/-26ReviewNoYesYesDown850240204,000Coreloft?Arato 30All RoundRegular880 g / 1 lb 15 oz86 cm / 34 in[Men's / Women's]
Mountain Equipment K7 (Men's)-13/-25NoYesYesDown800300240,000N/AN/A30D DriliteAll RoundRegular820 g / 1 lb 13 oz76 cm / 30 in
Rab Positron Pro (Men's)-13/-25NoYesYesDown800300240,000N/AN/A40D Pertex Quantum ProAll RoundRegular740 g / 1 lb 10 oz85 cm / 33.5 in[Men's]
Arc'teryx Therme SV (Men's)-11/-24ReviewNoNoYesParka750211158,250Coreloft60 g/m²2L Gore-TexAround TownRegular1.072 kg / 2 lb 5.8 oz96 cm / 37.75 in
Patagonia Grade VII (Men's)-11/-24NoNoYesDown800335268,000N/AN/A1.2 oz 15 & 20D Perfex QuantumAround TownRegular743 g / 1 lb 10.1 oz83 cm / 32.5 in
Arc'teryx Firebee AR (Men's - Women's)-10/-23ReviewNoYesYesDown800225180,000N/AN/AArato 7 & 10All RoundRegular680 g / 1 lb 8 oz79 cm / 31 in[Men's / Women's]
Mountain Equipment Exo (Men's)-10/-23NoYesYesDown800265212,000N/AN/ANylonAll RoundRegular770 g / 1 lb 11.2 oz79 cm / 31 in
Arc'teryx Thorsen (Men's)-7/-22ReviewNoNoYesParka750192144,000Coreloft60 g/m²90D 2L Gore-TexAround TownRegular1.1 kg / 2 lb 5.4 oz91 cm / 36 in[Men's]
Patagonia Frozen Range (Men's - Women's)-6/-21ReviewNoNoNoParka700268187,600N/AN/A4 oz 75-denier polyesterAround TownRegular1.253 kg / 2 lb 12.2 oz84 cm / 33 in[Men's / Women's]
Mountain Equipment Li. Ec. (Men's - Women's)-5/-20NoNoYesDown700295206,500N/AN/A50D DriliteAll RoundRegular822 g / 1 lb 13 oz72 cm / 28 in
Arc'teryx Patera Long (Women's)-2/-19NoNoYesParka7507455,500Coreloft60 + 80 g/m²2L Gore-TexAround TownRegular1.1 kg / 2 lb 6.8 oz117.5 cm / 46.25 in
Rab Neutrino Pro (Men's - Women's)-2/-19NoYesYesDown800212169,600N/AN/A20D Pertex Quantum ProAll RoundRegular585 g / 1 lb 8.6 oz77 cm / 30.3 in[Men's / Women's]
Arc'teryx Dually Belay (Men's)0/-18ReviewNoYesYesSyntheticN/AN/AN/AThermaTek92 g/m²30D NylonAround TownRegular705 g / 1 lb 9 oz84 cm / 33 in[Men's]
Arc'teryx Centrale (Women's)0/-18ReviewNoNoYesParka750157117,750Coreloft60 g/m²N90p NylonAround TownRegular885 g / 1 lb 15.2 oz95 cm / 37.5 in[Women's]
Arc'teryx Camosun (Men's)0/-18ReviewNoNoNoParka75010578,750Coreloft140 g/m²N150p-X Gore-TexAround TownTrim960 g / 2 lb 1.9 oz80 cm / 31.5 in[Men's]
Arc'teryx Cerium SV (Men's)0/-18ReviewNoYesNoDown850162137,700Coreloft80 + 140 g/m²Arato 7 & 10All RoundRegular415 g / 14.6 oz69.5 cm / 27.4 in[Men's / Women's]
Arc'teryx Revet (Men's)2/-17NoNoYesParka750?N/AN/A20d nylon/spandex double weaveAround TownRegular755 g / 1 lb 10.6 oz91 cm / 36 in
Arc'teryx Piedmont (Men's)3/-16NoYesYesParka750218163,500N/AN/AArato 10Around TownRegular515 g / 1 lb 2.2 oz82 cm / 32.25 in
Arc'teryx Fission SV (Men's - Women's)3/-16ReviewNoNoYesSyntheticN/AN/AN/ACoreloft Continuous90 + 65 g/m²N80p-X Gore-Tex 2LAll RoundRegular890 g / 1 lb 15.4 oz81 cm / 31.8 in[Men's / Women's]
Arc'teryx Alpha Lightweight (Men's)3/-16NoYesYesDown85011799,450Coreloft Compact40 g/m²Hadron 2L Gore-Tex InfiniumClimbingRegular540 g / 1 lb 3 oz?
Outdoor Research Sup. Alp. (Men's - Women's)3/-16NoNoYesDown800182145,600N/AN/A30D Pertex Quantum ProAll RoundRegular825 g / 1 lb 13.1 oz85 cm / 33.5 in[Men's / Women's]
Arc'teryx Alessa Long (Women's)3/-16NoNoNoParkaN/AN/AN/ACoreloft80 + 120 g/m²N90p 2L Gore-TexAround TownRegular1.015 kg / 2 lb 3.8 oz123 cm / 48.5 in
Patagonia Tres 3-in-1 (Men's - Women's)3/-16ReviewNoNoNoParka70011882,600N/AN/A5.5 oz polyesterAround TownRegular1.307 kg / 2 lb 14.1 oz85 cm / 33.5 in[Men's / Women's]
Arc'teryx Radsten Parka (Men's)3/-16NoNoNoParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LAround TownRegular745 g / 1 lb 10.3 oz82 cm / 32.25 in
Rab Electron Pro (Men's - Women's)5/-15NoYesYesDown800180144,000N/AN/A20D Pertex Quantum ProAll RoundRegular525 g / 1 lb 2.5 oz74 cm / 29 in[Men's / Women's]
Arc'teryx Therme Parka (Men's)5/-15ReviewNoNoYesParka75012090,000Coreloft60 + 80 g/m²P75d PolyesterAround TownRegular991 g / 2 lb 3 oz85 cm / 33.5 in[Men's]
Arc'teryx Macai (Men's)5/-15ReviewYes, zipsNoNoDown7506951,750Coreloft Compact60 + 100 g/m²N40p-X 3L Gore-TexSki/SnowboardRegular1 kg / 2 lb 4 oz76 cm / 30 in[Men's]
Arc'teryx Nuclei SV (Men's)5/-15ReviewNoYesYesSyntheticN/AN/AN/ACoreloft Continuous180 g/m2 + 90 g/m2Arato 15ClimbingRegular600 g / 1 lb 5.2 oz81 cm / 31.8 in[Men's / Women's]
Patagonia DAS Parka (Men's)5/-15NoYesYesParkaN/AN/AN/APrimaLoft Gold Insulation Eco133 + 40 gPertex Quantum ProAround TownRegular555 g / 1lb 3.6 oz84 cm / 33 in[Men's / Women's]
Arc'teryx Patera (Women's)5/-15ReviewNoNoYesParka7505843,500Coreloft60 + 80 g/m²2L Gore-TexAround TownTrim867 g / 1 lb 14.6 oz93 cm / 37 in[Women's]
Black Diamond Access Down (Men's - Women's)7/-14NoYesYesDown700155108,500N/AN/A30D ripstop nylonAll RoundRegular442 g / 15.6 oz76 cm / 29.75 in[Men's / Women's]
Arc'teryx Kappa (Men's)7/-14ReviewNoNoYesSyntheticN/AN/AN/ACoreloft Continuous140 g/m²N70p Gore ThermiumAll RoundRegular755 g / 1 lb 10.6 oz80 cm / 31.5 in[Men's]
Arc'teryx Prema Down Coat (Women's)7/-14NoNoYesParka7509269,000N/AN/ANylonAround TownRegular794 g / 1 lb 12 oz117 cm / 46.1 in[Women's]
Arc'teryx Radsten Insulated (Men's)7/-14NoNoNoParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LAround TownRegular715 g / 1 lb 9.2 oz73 cm / 28.75 in
Rab Microlight Alpine (Men's - Women's)7/-14NoYesNoDown700153107,100N/AN/A30D Pertex QuantumAll RoundRegular466 g / 1 lb 0.5 oz72 cm / 28.5 in[Men's / Women's]
Arc'teryx Thorium (Men's - Women's)7/-14ReviewNoYesYesDown750140105,000Coreloft80 + 140 g/m²Arato 30All RoundRegular517 g / 1 lb 2.2 oz71.5 cm / 28.1 in[Men's]
Feathered Friends Eos8/-13NoYesNoDown90010594,500N/AN/APertex QuantumAll RoundRegular306 g / 10.8 oz?
Arc'teryx Thorium AR (Men's - Women's)8/-13ReviewNoYesNoDown75013097,500Coreloft80 + 140 g/m²Arato 30All RoundRegular490 g / 1 lb 1.3 oz72 cm / 28.3 in[Men's / Women's]
Patagonia Macro Puff (Men's - Women's)8/-13ReviewNoNoNoSyntheticN/AN/AN/APlumaFill135 + 90 g10D Recycled nylon ripstopAll RoundRegular435 g / 15.3 oz79 cm / 31 in[Men's / Women's]
Arc'teryx Macai LT (Men's)8/-13Yes, zipsNoNoDown7504936,750Coreloft Compact60 g/m²N40p-X 3L Gore-TexSki/SnowboardRegular855 g / 1 lb 14.2 oz74 cm / 29.1 in
Arc'teryx Seyla (Women's)8/-13NoNoYesParka7509269,000N/AN/AArato 10Around TownRegular507 g / 1 lb. 1.9 oz.87 cm / 34.4 in[Women's]
Patagonia Fitz Roy (Men's - Women's)8/-13NoYesNoDown800128102,400N/AN/A20D NylonAll RoundRegular632 g / 1lb 6.3 oz74 cm / 29 in[Men's / Women's]
Arc'teryx Koda (Men's)8/-13NoNoNoParkaN/AN/AN/ACoreloft80 + 140 g/m²N80p-X Gore-TexAround TownRegular720 g / 1 lb 9.4 oz75 cm / 29.5 in[Men's]
Patagonia Vosque 3-in-1 (Women's)10/-12ReviewNoNoNoParkaN/AN/AN/AThermoLite100 g65% nylon, 35% polyesterAround TownRegular1.360 kg / 3 lb90 cm / 35.5 in[Women's]
Patagonia City Storm Down (Men's - Women's)12/-11NoYesNoParka700191133,700N/AN/A4.2 oz polyesterAll RoundRegular468 g / 16.5 oz91 cm / 36 in
Patagonia Jackson Glacier (Men's - Women's)12/-11ReviewNoNoYesParka70014198,700N/AN/A3.6 oz 50D polyesterAround TownRegular880 g / 1 lb 15 oz79 cm / 31 in[Men's / Women's]
Arc'teryx Sensa (Women's)14/-10NoNoYesParkaN/AN/AN/ACoreloft Compact120 g/m²NP100d Gore-Tex 2LAround TownRelaxed785 g / 1 lb 11.7 oz86 cm / 34 in
Patagonia Hi Loft Down (Men's - Women's)14/-10ReviewNoYesNoDown600177106,200N/AN/A1.4 oz 30D polyesterAll RoundRegular540 g / 1 lb 3 oz76 cm / 30 in[Men's]
REI Magma 850 Hoodie 2.0 (Men's - Women's)14/-10NoYesNoDown850120102,000N/AN/APertex mini ripstop nylonAll RoundRegular340 g / 13.75 oz74 cm / 29.25 in[Men's / Women's]
Arc'teryx Beta Insulated Coat (Women's)16/-9ReviewNoNoYesSyntheticN/AN/AN/ACoreloft 80 g/m² + 120 g/m²2L 40D Gore-TexAround TownRegular600 g / 1 lb 5.2 oz?
Arc'teryx Atom AR (Men's - Women's)18/-8ReviewYes, meshNoNoSyntheticN/AN/AN/ACoreloft Continuous120 g/m2 + 80 g/m2 + 60 g/m230D TyonoAll RoundRegular475 g / 1 lb 74 cm / 29.1 in[Men's / Women's]
Patagonia Downdrift (Men's - Women's)18/-8NoNoNoDown600279167,400N/AN/A4.2 oz polyesterAround TownRegular1.014 kg / 2 lb 3.8 oz?[Men's / Women's]
Arc'teryx Magnus (Men's)19/-7NoNoNoParkaN/AN/AN/ACoreloft80 gN60p Gore-Tex 2LAround TownRegular690 g / 1 lb 8.3 oz83 cm / 32.5 in[Men's]
Arc'teryx Agrium (Men's - Women's)21/-6NoYesNoDown85011799,450N/AN/AAratoAll RoundRegular365 g / 12.9 oz75 cm / 29.5 in
Patagonia AlpLight Down (Men's - Women's)21/-6NoYesNoDown80010080,000N/AN/A0.8 oz 10D polyesterAll RoundSlim270 g / 9.5 oz74 cm / 29 in[Men's]
Arc'teryx Beta Insulated (Men's - Women's)21/-6ReviewYes, zipsNoYesSyntheticN/AN/AN/ACoreloft Continuous80 g/m²2L 40D Gore-TexAll RoundRegular680 g / 1 lb 8 oz78.5 cm / 31 in
Patagonia Topley (Men's)23/-5NoNoYesDown700172120,400N/AN/A6 oz polyesterAll RoundRegular1.133 kg / 2 lb 8 oz77 cm / 30.5 in[Men's]
Arc'teryx Alpha IS (Men's)23/-5NoYesYesSyntheticN/AN/AN/ACoreloft Continuous65 g/m²N40p-X 2L Gore-TexClimbingRegular610 g / 1 lb 5.5 oz78 cm / 30.75 in[Men's]
Rab Xenon 2.0 (Men's - Women's)23/-5NoYesYesSyntheticN/AN/AN/APrimaLoft Silver60 g30D Pertex QuantumAll RoundRegular385 g / 13.6 oz71.5 cm / 28.1 in[Men's / Women's]
Patagonia Down Sweater (Men's - Women's)23/-5ReviewNoYesNoDown800150120,000N/AN/A1.4 oz 20x30D polyesterAll RoundRegular428 g / 15.1 oz67 cm / 26.25 in[Men's / Women's]
Arc'teryx Ralle Parka (Men's)25/-4NoNoYesParkaN/AN/AN/ACoreloft 80 g/m²2L 40D Gore-TexAround TownRegular735 g / 1 lb 9.9 oz?
Patagonia Silent Down (Men's - Women's)26/-3ReviewNoNoNoDown70010976,300N/AN/A2.2 oz polyesterAround TownRegular585 g / 1 lb 4.7 oz74 cm / 29 in[Men's / Women's]
Arc'teryx Therme Insulated (Men's)26/-3ReviewNoNoNoSyntheticN/AN/AN/ACoreloft Compact40 g/m²2L Gore-TexAround TownRegular960 g / 2 lb 1.9 oz73 cm / 28.75 in
Arc'teryx Cerium (Men's - Women's)26/-3NoYesNoDown85011396,050Coreloft 80 + 100 g/m²Arato 15All RoundTrim335 g / 11.8 oz?
Mountain Hardwear GW/2 (Men's - Women's)28/-2NoYesNoDown8008568,000N/AN/A10D Ripstop NylonAll RoundTrim250 g / 8.8 oz70 cm / 27.5 in[Men's / Women's]
Arc'teryx Cerium LT (Men's - Women's)28/-2ReviewNoYesNoDown85010286,700Coreloft 80 + 100 g/m²Arato 10All RoundTrim305 g / 10.8 oz72 cm / 28.3 in[Men's / Women's]
Arc'teryx Nuclei FL (Men's - Women's)32/0ReviewNoYesNoSyntheticN/AN/AN/ACoreloft Continuous65 g/m²Arato 10rClimbingTrim325 g / 11.5 oz75 cm / 29.5 in[Men's / Women's]
Patagonia DAS Light (Men's - Women's)34/1NoYesYesSyntheticN/AN/AN/APlumaFill65 g0.8-oz 10-denier Pertex Quantum ProClimbingRegular320 g / 11.3 oz77 cm / 30.5 in
Patagonia Micro Puff (Men's - Women's)36/2ReviewNoYesNoSyntheticN/AN/AN/APlumaFill65 gPertex QuantumAll RoundTrim298 g / 10.5 oz75 cm / 29.5 in[Men's / Women's]
Patagonia Isthmus (Men's)36/2NoNoNoParkaN/AN/AN/AThermoGreen60 g4.2 oz polyesterAround TownRegular895 g / 1 lb 15.6 oz70 cm / 27.5 in[Men's]
Arc'teryx Proton LT (Men's - Women's)37/3ReviewNoNoNoSyntheticN/AN/AN/ACoreloft Compact80 g/m2 + 60 g/m2Fortius Air 20ClimbingTrim375 g / 13.2 oz75 cm / 29.4 in[Men's / Women's]
Patagonia Nano Puff (Men's - Women's)37/3ReviewNoYesNoSyntheticN/AN/AN/APrimaLoft Gold Insulation Eco60 g22D PolyesterAll RoundRegular363 g / 12.8 oz71.5 cm / 28 in[Men's / Women's]
Arc'teryx Norvan SL Ins. (Men's - Women's)39/4NoYesNoSyntheticN/AN/AN/ACoreloft Compact40 g/m²Gore-Tex ShakeDryRunningTrim270 g / 9.5 oz71.5 cm / 28.1 in[Men's / Women's]
Patagonia Nano Air (Men's - Women's)41/5ReviewNoNoNoSyntheticN/AN/AN/AFullRange60 g33D Nylon ripstopAll RoundTrim318 g / 11.2 oz?[Men's / Women's]
Arc'teryx Atom LT (Men's - Women's)43/6ReviewYes, meshNoNoSyntheticN/AN/AN/ACoreloft Continuous60 g/m²20D TyonoAll RoundTrim375 g / 13.2 oz74 cm / 29.1 in[Men's / Women's]
Arc'teryx Cerium SL (Men's - Women's)43/6ReviewNoYesNoDown8505849,300Coreloft 40 + 100 g/m²Arato 7All RoundTrim215 g / 7.6 oz69 cm / 27.2 in [Men's / Women's]
Arc'teryx Proton Hybrid (Men's - Women's)46/8ReviewNoNoNoSyntheticN/AN/AN/ACoreloft Compact40 g/m²Fortius™ Air 50All RoundTrim365 g / 12.9 oz?[Women's]
Arc'teryx Proton FL (Men's)48/9ReviewNoNoNoSyntheticN/AN/AN/AOcta Loft94 g/m²Fortius Air 20ClimbingTrim323 g / 11.4 oz77 cm / 30.4 in[Men's / Women's]
Arc'teryx Atom SL (Men's - Women's)52/11ReviewYes, meshNoNoSyntheticN/AN/AN/ACoreloft Compact40 g/m²20D TyonoAll RoundTrim245 g / 8.6 oz72 cm / 28.3 in[Men's / Women's]
REI Stormhenge Hybrid (Men's - Women's)TestingYes, zipsNoNoDown850?N/AN/A40D + 80DAll RoundRegular900 g / 1 lb 15.75 oz80 cm / 31.5 in[Men's / Women's]
Arc'teryx Monitor Insulated (Women's)TestingNoNoYesParkaN/AN/AN/ACoreloft80 + 100 g/m²40D 3L Gore-TexAround TownOversized645 g / 1 lb 6.8 oz93 cm / 37 in
Arc'teryx Coelle (Women's)TestingNoNoYesParkaN/AN/AN/ACoreloft80 + 140 g/m²40D 2L Gore-TexAround TownRegular460 g / 1 lb 0.2 oz93 cm / 37 in

Find the estimated average lowest temperature ratings you can wear each jacket above, assuming: 

  • you only have a shirt under and no shell over, 
  • you're walking, 
  • it's a bit windy and there's no precipitation. 

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

Also,

  • Always opt for the warmer option when in doubt. 
  • Ratings will best respond to men's physiology. As most women tend to run colder than men, for women, bumping each rating by 10 - 20 deg F (5 - 10 deg C) is recommended. 
  • Ratings are applicable to your torso and arms only. In colder weather (below, say, 20 deg F (-6 deg C)), it becomes much harder to keep your hands, feet and head warm rather than your torso and arms. 
    • This is why getting beanies, gloves and socks are game changers in this regard. 
  • Further reading: 
    • CLO values of synthetic insulators: https://outdoorcrunch.com/clo-values/
    • Guide to Arc'teryx Jackets: https://outdoorcrunch.com/best-arcteryx-jacket/
    • Guide to Patagonia Jackets: https://outdoorcrunch.com/best-patagonia-jackets/
  • Also see:
    • Arc'teryx Jacket Finder: https://arcteryx.com/us/en/shop/jacket-finder

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. 

 

Common user profiles and corresponding best synthetic insulated jackets

"I'm looking for the best synthetic insulated jacket for high output activities." 

If you'll be climbing or bouldering more than half the time with this jacket, then get the Proton LT as you'll need more abrasion resistance. If it's less than half the time, then get the Atom LT since you can sacrifice some abrasion resistance to add some more breathability in return. 

  • Latest on the blog:
  • 13 Mar 2023: I've been to Pfander and floodplain forests with my Nuclei SV
  • 13 Dec 2022: Arc'teryx Alpha Parka Review: The most impressive jacket of all time
  • 8 Dec 2022: Arc'teryx ReGEAR: OutdoorCrunch exclusive promo code!
  • 7 Nov 2022: 2023 Thorium Hoody is in - as well as the new Thorium Parka (yes, parka)
  • 2 Nov 2022: Beta Insulated Jacket: Pit zips AND two way zipper!
  • 7 October 2022: Proton Hybrid Hoody is live! The ultimate do it all?
  • 5 October 2022: DropHood vs StormHood: Pros/cons and best uses
  • 5 September 2022: Reviewing Arc'teryx Fall Winter 22/23 Gear
  • 5 August 2022: 5 things all Arc'teryx newbies should know
  • #A sidenote here: Arc'teryx's PDF guide to jackets is GOOOLLLLDDDDD. Absolutely check that out too if you're interested in buying one. 
 

Nano Air is also a stunning piece. If you prefer Patagonia over Arc'teryx, then you can absolutely get that with peace of mind. 

"I need a casual jacket around town. I want it to be warm, waterproof, windproof, stylish and comfortable." 

If it goes down to 5 deg F /-15 deg C, get the Nuclei SV. If the coldest you'll be wearing the jacket won't be lower than 18 deg F / -8 deg C, then get the Atom AR. 

"I need a streamlined, lightly insulated, casual, packable jacket. I'm planning to use it as if it's a down jacket that can get wet." 

Nuclei FL is your jacket 100%. 

"I need a jack of all trades, master of none kinda jacket. I want it to accomplish casual and active use at the same time. What would you have for me?" 

Well, there's no one single jacket that can replace the entire benefits of a insulated + shell combo like the most popular Proton LT + Beta AR. But Arc'teryx still does have alternatives for you in here, and they're very, very good. This is the closest a standalone jacket can get to a layering. 

If you'll be using the jacket casually around town more than half of the time, then I'd get the Beta Insulated. 

If it's high output activities most of the time instead of casual use, then I'd recommend the Proton Hybrid. Yes, Proton Hybrid does not have pit zips or two way zippers (the two foundations of a breathable jacket), but you'll wish having them less than you do with other jackets because it's very lightly insulated. It's one of the 3 least insulated Arc'teryx jackets of all time, besides the Proton FL and Atom SL. 

"I like the preppy and/or classical family photo look and want something casual. I won't be active with it most of the time. Maybe never." 

Look up Micro Puff and Nano Puff and get the one that you like the looks of the most. 


I hope this post was helpful for you to learn more about the jacket(s) in your mind.


Feel free to ask me any questions or provide feedback and I'll be happy to respond in the comment section below.


Guide: Insulated & Shell Jackets

Start here:

  • Best Arc'teryx Jackets: My Top Picks
  • Best Patagonia Jackets: My Top Picks
  • Best Down Jackets: My Top Picks
  • Best Synthetic Insulated Jackets: My Top Picks
  • Temperature Ratings of Best Insulated Jackets
  • Arc'teryx Wiki: Complete Data Set
  • CLO values: Explained, compared & plotted
  • Ultimate Size Guide to Arc'teryx
  • StormHood vs DropHood

Complete list:

  • All Arc'teryx Shell Jackets sorted by performance
  • All Arc'teryx Ski Jackets sorted by performance
  • All Patagonia Ski Jackets sorted by performance
  • All Patagonia Winter Jackets compared
  • All Patagonia Fleeces compared
  • All Patagonia Rain Jackets compared
  • All Patagonia Down Jackets compared

Synthetic Insulated Jackets

  • Arc'teryx Proton LT
  • Patagonia Nano Air
  • Arc'teryx Atom LT
  • Arc'teryx Atom AR
  • Patagonia Nano Puff
  • Patagonia Micro Puff
  • Arc'teryx Atom SL
  • Arc'teryx Proton FL
  • Arc'teryx Proton Hybrid Hoody
  • Arc'teryx Fission SV
  • Arc'teryx Dually Belay Parka
  • Arc'teryx Atom SL Anorak
  • Arc'teryx Kappa

Down Jackets

  • Arc'teryx Cerium LT
  • Arc'teryx Cerium SV
  • Arc'teryx Cerium SL
  • Arc'teryx Thorium AR
  • Patagonia Down Sweater
  • Arc'teryx Firebee AR
  • Arc'teryx Ceres SV

Parkas

  • Arc'teryx Thorsen
  • Arc'teryx Therme
  • Arc'teryx Camosun
  • Arc'teryx Patera
  • Arc'teryx Centrale
  • Patagonia Tres
  • Patagonia Vosque

Shell Jackets

  • Arc'teryx Beta SV
  • Arc'teryx Beta FL
  • Arc'teryx Beta AR
  • Arc'teryx Alpha AR
  • Arc'teryx Alpha SV
  • Arc'teryx Gamma MX
  • Arc'teryx Gamma LT
  • Arc'teryx Gamma SL

Ski Jackets

  • Arc'teryx Rush
  • Arc'teryx Rush IS
  • Arc'teryx Sabre LT
  • Arc'teryx Sabre AR
  • Arc'teryx Cassiar
  • Arc'teryx Sidewinder
  • Arc'teryx Macai

Fleece Jackets

  • Patagonia R1
  • Patagonia R2
  • Patagonia Synchilla
  • Patagonia Better Sweater

Wind Jackets

  • Arc'teryx Solano
  • Arc'teryx Nuclei FL
  • Patagonia Houdini
  • Patagonia Houdini Air
  • Arc'teryx Squamish
  • Arc'teryx Incendo
  • Arc'teryx Norvan SL
  • Arc'teryx Trino SL

Rain Jackets

  • Patagonia Torrentshell
  • Patagonia Torrentshell Insulated
  • Arc'teryx Beta SL Hybrid
  • Arc'teryx Zeta FL

Also see:

  • Arc'teryx vs Patagonia
  • List of Manufacturing Facilities of all Arc'teryx Jackets

Thank you for reading!

Filed Under: Synthetic Insulated Jackets Tagged With: arcteryx, arcteryx insulated jackets, arcteryx jackets, jackets

Reader Interactions

Comments

  1. Jacob says

    February 28, 2020 at 12:06 am

    Love all the comparisons you’ve put together o the site, and this beautiful table of warmth estimates. Would love to hear your thoughts (and warmth estimates) on the Proton FL and Nuclei FL. I’m in the mild weather range most of the time, and curious to see how these stack up against the cerium and proton options that hovered around the 0C mark on your table.

    • Canberk Koksal says

      February 28, 2020 at 11:17 am

      Glad you liked it Jacob 🙂

      I’m pretty glad to see the return of Nuclei FL. It’s a fantastic series of insulated shell jackets and don’t really have a substitute in the entire Arc’teryx line up.

      Although they did trim down the fill compared to the previous version, it’s still significantly warmer than Proton FL.

      Chart is updated with both jackets. Because my site is using a cache, you might not be able to see the updated chart when you refresh this page. In that case, try reloading the page through Shift + F5 keyboard shortcut.

      Hope this is helpful.

  2. Benoit says

    April 17, 2020 at 10:06 pm

    Hi,

    Love the site and the comparisons of all the different gear. I would love to hear your opinion on the gear “problems” i face at the moment:

    I own a macro puff hoody, i use them in dry weather for low activity cold-hikes, choice depending on temps. On ski holidays the macro is ideal for apres ski and extra warmth post – slopes.

    I use a stretch rainshadow as my primary rain protection shell and only comes out when it rains. It is packable so it comes easy.

    For hikes and walking in belgium or other higher output activities depending on temperatures and weather i use the atom Lt or a gamma Lt.

    Next i have a micro puff, i bought it initially for its packability. When on holidays or hikes or… it stows away very nicely. But i am tending to sell it, because of the bulkier fit, the thin fabric and the special patern that makes it a garbage bag sometimes. Also i want my products to last and because its stowed away most of the times..

    Next september i will summit mount meru in tanzania so i will still need something packable to throw on when i stop for the day. When on the climb i will wear the atom if necessary temperature wise ( i need something packable that works and fits great with good warmth value, not as much as the macro puffy).

    With this in mind would you:
    – still keep the micro puff, its a niche product but still the best aNd accept the reasons why you like it less.
    – replace it by the cerium Lt (down and packable and maybe more durable)
    – replace it by cerium sl (not as warm as micro puff level?)
    – replace it by atom ar (if only it could be stuffed as the products above)

    Thanks for reading man!
    Kind regards

  3. Benoit says

    April 18, 2020 at 6:35 am

    Hi guys,
    Love the site, the info etc.

    I own a micro puff hoody, mainly because of its packability. I wear it when it’s dry on its own as a outer layer or under a rain shell when raining. Mainly for walking, hiking and general use. I own a macro puff for the case of ultra low temperatures.

    Now i dont like the shiny garbage like feel of it, the very thin shell and i am a bit worried about long term durability. The fit could be better for my type. But hey it still a good jacket!

    But i would pass it on en go for alternative (i go for mount meru in september so i ll need an insulator thats highly packable and gives warmth when stopping the active part)

    So would you suggest:
    Atom ar hoody (but not packable, i own an Lt for the active colder temps)
    Cerium lt
    Cerium sl (to less warmth?)

    Thanks guys!

  4. Jonathan says

    December 2, 2020 at 7:53 am

    Great information. I’m wondering where you think the LEAF Cold WX Jacket SV Men’s fall in the chart?

    • Canberk says

      December 8, 2020 at 12:25 pm

      Glad you found it helpful Jonathan 🙂 Thank you for taking the time to comment!

      Unfortunately, not enough information is available for the LEAF Cold WX Jacket SV – as it’s the case with many Arc’teyrx LEAF products. So it’s difficult to make an estimate.

  5. Christopher Sayers says

    February 2, 2021 at 5:05 pm

    One of the best gear blogs I’ve ever read. Keep up the good work! Where do you think the new Patagonia DAS Light Hoody stands in this line-up?

  6. Ron Prud'homme says

    November 22, 2021 at 8:35 pm

    Hello, I really enjoyed reading your articles and you were able to clarify a lot of uncertainties I had about the myriad of options offered by Arcteryx!

    Could I have your insight regarding the following: I am looking for an all around casual winter jacket for the Ottawa, Ontario area. I am currently considering the Fission for its versatility and clean/simple design and Therme for the same reasons (I am not in love with the Therme collar though) – i know these jackets differ a bit, I want a nice warm simple « grab-and-go » winter jacket or parka that will allow me to take brisk walks, low intense skating once in a while and other low output activities.

    Much appreciated!
    Thank you,

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