Along with Dually Belay, Fission SV and Nuclei SV; Kappa (Men's) is one of the warmest and most weather resistant synthetic insulated jackets Arc'teryx has ever manufactured. Being designed specifically for stationary use in damp areas, which is a pretty standard and common type of use, it's a shame that Arc'teryx never offered this absolute unit in women's counterpart.
In summary; if you're looking for a warm, comfortable, casual jacket you can use many years during cold and damp city days, then Kappa can be a great option for you (don't expect any breathability or packability, though). My only complaint is that it's bulky. Wish it was offered in regular fit.
Now let's take a closer look at it.
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.
Warmth
Kappa is equipped with 140 g/m² of Coreloft Continuous. Coreloft, and specifically Coreloft Continuous, is Arc'teryx's most common synthetic insulator. You can see a list of Arc'teryx's all insulated jackets, their insulators and the insulation amounts in this guide I've put together.
- Insulation isn't the only factor that determines warmth (face fabric, fit, length etc also play a role though weaker) - though it's the most important one. So I'll limit the context here to the insulation.
Considering the fact that insulation density of other jackets in the market and in Arc'teryx line up mostly hover around below 100 g/m², 140 g/m² of insulation puts Kappa quite a bit ahead in warmth department.
Speaking of the performance of the insulator itself, Coreloft Continuous, it's almost impossible to determine its stance along other synthetic insulators like PrimaLoft and ThermaTek.
Though reverse engineering shows me that they aren't all that different from one another, as I explained in this post.
Now how do all these play out in practice?
Considering you only have a t-shirt under the Kappa, assuming little wind and casual use (no output), you'll most likely to wear it comfortably in temperatures over 7 deg F (-14 deg C).
Name Activity Breathability Weather Res. Durability Temp (F/C) Bottom line Review Pit zips? Two way zipper? Stuffs into itself? Hood? Face Fabric Fit Weight Length Alpha FL (Men's - Women's) Climbing 7/10 No data No data 10/10 N/A No No Yes Hadron 3L Gore-Tex Trim 209 g / 7.4 oz 76.5 cm / 30 in Yes Alpha SL (Men's - Women's) Climbing 5/10 7/10 No data 9/10 N/A No No Yes N40p 3L Gore-Tex Trim 326 g / 11.5 oz 77.5 cm / 30.5 in Yes Alpha (aka AR) (Men's - Women's) Climbing 8/10 9/10 8/10 4/10 N/A Go-to climbing harshell. Review Yes No No N40d & N80d Most Rugged 3L Gore-Tex Pro Regular 430 g / 15.2 oz 79.5 cm / 31.25 in No Alpha SV (Men's - Women's) Climbing 8/10 10/10 10/10 3/10 N/A Strongest climbing hardshell. Review Yes No No N100d Most Rugged 3L Gore-Tex Pro Regular 510 g / 1 lb 2 oz 78 cm / 30.75 in No Alpha IS (Men's) Climbing 7/10 5/10 No data 8/10 23/-5 No Yes Yes N40p-X 2L Gore-Tex Regular 610 g / 1 lb 5.5 oz 78 cm / 30.75 in Yes Beta (Men's - Women's) All Round 6/10 7/10 7/10 8/10 N/A Streamlined all-doer shell. Review No No No N30p-X 3L Gore-Tex Trim 300 g / 10.6 oz 76 cm / 30 in No Beta Lightweight (Men's - Women's) All Round 8/10 7/10 7/10 6/10 N/A Review Yes No No N40p 3L Gore-Tex Fitted 380 g / 13.4 oz 75 cm / 29.5 in No Beta LT (Men's - Women's) All Round 7/10 7/10 8/10 6/10 N/A Review Yes No No N40d 3L Gore-Tex Fitted 395 g / 13.9 oz 76 cm / 30 in No Beta AR (Men's - Women's) All Round 8/10 9/10 9/10 4/10 N/A Go-to all-round harshell. Review Yes No No N40d & N80d Most Rugged 3L Gore-Tex Pro Regular 460 g / 1 lb 76 cm / 30 in No Beta AR StormHood (Men's - Women's) All Round 8/10 9/10 9/10 4/10 N/A Review Yes No No N40d & N80d Most Rugged 3L Gore-Tex Pro Regular 460 g / 1 lb 76 cm / 30 in No Beta Coat (Women's) All Round 6/10 5/10 No data 5/10 N/A No Yes No 3L Gore-Tex Regular 320 g / 11.3 oz 88 cm / 34.5 in No Beta Insulated (Men's - Women's) All Round 9/10 7/10 8/10 No data 21/-6 Go-to hybrid jacket. Review Yes Yes No N40d 2L Gore-Tex Regular 680 g / 1 lb 8 oz 78.5 cm / 31 in No Beta Insulated Coat (Women's) All Round 7/10 No data No data No data 16/-9 No Yes No N40d 2L Gore-Tex Regular 600 g / 1 lb 5.2 oz 86 cm / 34 in No Beta Down Insulated (Men's) All Round 9/10 7/10 8/10 No data 0/-18 Yes Yes No 2L 40D Gore-Tex Regular 760 g / 1 lb 10.8 oz 79 cm / 31 in No Beta Long All Round 4/10 9/10 No data 3/10 N/A Review No No No N80p 3L Gore-Tex Regular 441 g / 15.6 oz 85 cm / 33.5 in Yes Beta LT Hadron All Round 7/10 6/10 4/10 5/10 N/A No No No Hadron 3L Gore-Tex Fitted 255 g / 9 oz 76 cm / 30 in Yes Beta SV (Men's - Women's) All Round 8/10 10/10 10/10 3/10 N/A Strongest all-round harshell. Review Yes No No N80p-X Most Rugged 3L Gore-Tex Pro Regular 495 g / 1 lb 1.5 oz 79 cm / 31 in Yes Gamma Lw. (aka SL) (Men's - Women's) All Round 7/10 2/10 6/10 5/10 N/A Review No No No Fortius 1.0 Trim 310 g / 10.9 oz 74 cm / 29.1 in No Gamma (aka LT) (Men's - Women's) All Round 7/10 3/10 7/10 3/10 N/A Go-to softshell. Review No No No Wee Burly Double Weave Regular 545 g / 1 lb 3.2 oz 76 cm / 30 in No Gamma MX (Men's - Women's) All Round 6/10 4/10 8/10 3/10 N/A Strongest softshell. Review No No No Fortius 2.0 Regular 555 g / 1 lb 3.6 oz 74 cm / 29.1 in No Sabre SV (Men's) Skiing 10/10 10/10 10/10 1/10 N/A Strongest ski jacket. Review Yes Yes No N100d Most Rugged 3L Gore-Tex Pro Regular 595 g / 1 lb 5 oz 85 cm / 33.5 in No Sabre (Men's) Skiing 8/10 8/10 7/10 2/10 N/A Review Yes No No N80p-X 3L Gore-Tex Regular 705 g / 1 lb 8.9 oz 79 cm / 31 in No Sabre Insulated (Men's) Skiing 7/10 No data 6/10 No data No data Review Yes No No N80p 2L Gore-Tex Regular 815 g / 1 lb 12.7 oz 76 cm / 30 in No Rush (Men's) Skiing 8/10 9/10 9/10 3/10 N/A Go-to ski jacket. Review Yes No No N80p-X & N100p-X 3L Most Rugged Gore-Tex Pro Regular 590 g / 1 lb 4.8 oz 79.5 cm / 31.25 in No Rush Insulated (Men's - Women's) Skiing 3/10 5/10 5/10 9/10 16/-9 Review No No Yes Hadron 2L Gore-Tex Infinium Regular 515 g / 1 lb 2.2 oz 79 cm / 31 in No Macai Shell (Men's) Skiing No data No data No data No data N/A Review Yes No No N80p-X 3L Gore-Tex Regular 775 g / 1 lb 11.3 oz ? No Macai (Men's) Skiing 7/10 7/10 6/10 1/10 5/-15 Review Yes No No N40p-X 3L Gore-Tex Regular 990 g / 2 lb 2.9 oz 75 cm / 29.5 in No Macai Lightweight (aka LT) (Men's) Skiing 7/10 7/10 6/10 2/10 8/-13 Review Yes No No N40p-X 3L Gore-Tex Regular 855 g / 1 lb 14.2 oz ? No Theriss Down (Women's) Skiing 7/10 6/10 7/10 2/10 No data Review Yes No No N80p 2L Gore-Tex Regular 709 g / 1 lb 9 oz 63 cm / 24.8 in No Sentinel (Women's) Skiing 8/10 7/10 7/10 2/10 N/A Go-to ski jacket. Review Yes No No N70p 3L Gore-Tex Regular 640 g / 1 lb 6.6 oz 73.7 cm / 29 in No Sentinel Insulated (Women's) Skiing 8/10 No data No data No data 21/-6 Review Yes No No N80p 2L Gore-Tex Regular 600 g / 1 lb 5.2 oz 79.8 cm / 31.5 in No Sentinel Relaxed (Women's) Skiing No data No data No data No data N/A Yes No No N80p 3L Gore-Tex Regular 655 g / 1 lb 7.1 oz ? No Sidewinder (Women's) Skiing 8/10 8/10 7/10 2/10 N/A Yes No No N80p 3L Gore-Tex Regular 570 g / 1 lb 4.1 oz ? No Andessa (Women's) Skiing 10/10 No data No data 1/10 8/-13 Yes No No N40d 3L Gore-Tex Trim 869 g / 1 lb 14.7 oz 67 cm / 26.4 in Yes Andessa Shell (Women's) Skiing 5/10 No data No data 3/10 N/A No No No N70p 3L Gore-Tex Trim 560 g / 1 lb 3.8 oz ? Yes Micon Heather Skiing No data No data No data No data N/A Yes No No NP100-d 3L Gore-Tex Regular 685 g / 1 lb 8.2 oz 83 cm / 32.5 in Yes Micon (Men's) Skiing No data No data No data No data N/A Yes No No N80p 3L Gore-Tex Regular 685 g / 1 lb 8.2 oz 83 cm / 32.5 in Yes Cassiar (Men's) Skiing 8/10 7/10 8/10 3/10 N/A Review Yes No No N70p 3L Gore-Tex Trim 820 g / 1 lb 12.9 oz 74.5 cm / 29.3 in Yes Cassiar LT (Men's) Skiing 6/10 6/10 6/10 5/10 N/A Review Yes No No N70p 3L Gore-Tex Trim 605 g / 1 lb 5.3 oz 75 cm / 29.5 in Yes Ravenna (Women's) Skiing 8/10 7/10 8/10 3/10 N/A Review Yes No No N70s-4 3L Gore-Tex Trim 725 g / 1 lb 9.6 oz 69.5 cm / 27.4 in Yes Ravenna LT (Women's) Skiing 6/10 6/10 6/10 5/10 N/A Review Yes No No N70p 3L Gore-Tex Trim 540 g / 1 lb 3 oz 69 cm / 27.2 in Yes Procline (Men's) Skiing No data No data No data No data N/A Yes No No N70p Gore-Tex Infinium Trim 720 g / 1 lb 9.4 oz 76 cm / 30 in Yes Shashka Stretch (Women's) Skiing No data No data No data No data N/A Yes No No N70p Gore-Tex Infinium Trim 670 g / 1 lb 7.6 oz 71 cm / 28 in Yes Sabre AR (Men's) Skiing 7/10 8/10 7/10 7/10 N/A Review Yes No No N70p 3L Gore-Tex Regular 700 g / 1 lb 8.7 oz 79 cm / 31 in Yes Sentinel AR (Women's) Skiing 7/10 8/10 7/10 7/10 N/A Review Yes No No N70p 3L Gore-Tex Regular 590 g / 1 lb 4.8 oz 72.5 cm / 28.5 in Yes Sabre LT (Men's) Skiing 7/10 8/10 7/10 8/10 N/A Review Yes No No N80p 3L Gore-Tex Regular 660 g / 1 lb 7.3 oz 83 cm / 32.5 in Yes Sentinel LT (Women's) Skiing 7/10 8/10 7/10 8/10 N/A Review Yes No No N80p 3L Gore-Tex Regular 565 g / 1 lb 3.9 oz 73.5 cm / 29 in Yes Incendia (Women's) Skiing 8/10 9/10 9/10 3/10 N/A Review Yes No No NP100d 3L Gore-Tex Trim 610 g / 1 lb 5.5 oz 79 cm / 31 in Yes Indencia IS Skiing No data No data No data No data No data Yes No No N80p 2L Gore-Tex Regular ? 78 cm / 30.75 in Yes Squamish (Men's - Women's) Running 5/10 4/10 7/10 9/10 N/A Go-to running jacket. Review No No Yes 30D Tyono Trim 140 g / 4.9 oz 77.5 cm / 30.5 in No Norvan Windshell (Men's - Women's) Running No data No data No data No data N/A No No Yes Permeair 20 Trim 90 g / 3.2 oz 73 cm / 28.75 in No Norvan Shell (Men's - Women's) Running No data No data No data No data N/A No No No 13D 3L Gore-Tex Trim 190 g / 6.7 oz 73 cm / 28.75 in No Nodin (Women's) Running 8/10 5/10 5/10 10/10 N/A No No Yes 20D Tyono Trim 130 g / 4.6 oz 75 cm / 29.5 in No Incendo Airshell (Women's) Running No data No data No data No data N/A No No Yes ? Trim 105 g / 3.7 oz ? No Incendo (Men's) Running 7/10 4/10 5/10 10/10 N/A Review No No Yes Lumin Trim 125 g / 4.4 oz ? Yes Norvan LT (Men's - Women's) Running 5/10 5/10 8/10 6/10 N/A No No No N13p 3L Gore-Tex Trim 190 g / 6.7 oz ? Yes Norvan SL Ins. (Women's) Running No data No data No data No data 39/4 No No Yes Gore-Tex ShakeDry Trim 270 g / 9.5 oz 71.5 cm / 28.1 in Yes Cita (Women's) Running 7/10 4/10 5/10 10/10 N/A Review No No Yes Lumin Trim 120 g / 4.2 oz 67.5 cm / 26.5 in Yes Cita SL (Women's) Running 7/10 4/10 4/10 10/10 N/A Review Yes No Yes Permeair 20 Trim 65 g / 2.3 oz 61.5 cm / 24.2 in Yes Incendo SL (Men's) Running 7/10 4/10 4/10 10/10 N/A Review No No Yes Permair 20 & Canim Trim 80 g / 2.8 oz 73 cm / 28.75 in Yes Norvan SL (Men's - Women's) Running 7/10 6/10 8/10 8/10 N/A Review No No Yes Gore-Tex Infinium Trim 120 g / 4.2 oz 77 cm / 30.4 in Yes Trino SL (Men's) Running 8/10 5/10 7/10 6/10 N/A Review No No No Gore-Tex Infinium Trim 340 g / 12 oz 74 cm / 29.1 in Yes Trino SL Anorak (Women's) Running 8/10 7/10 8/10 7/10 N/A Review No No No Gore-Tex Infinium Trim 290 g / 10.2 oz 65 cm / 25.5 in Yes Solano (Women's) Around Town No data No data No data No data N/A Review No No No Gore-Tex Infinium Relaxed 355 g / 12.5 oz 72 cm / 28.3 in No Venda Anorak (Women's) Around Town No data No data No data No data N/A No No No Gore-Tex Relaxed 255 g / 9 oz 75.5 cm / 29.7 in Yes Zeta FL (Men's - Women's) Hiking 4/10 6/10 4/10 6/10 N/A No No No N20r 2L Gore-Tex Trim 221 g / 7.8 oz 76 cm / 30 in Yes Zeta SL (Men's - Women's) Hiking 3/10 5/10 4/10 5/10 N/A Review No No No 2L Gore-Tex Trim 310 g / 10.9 oz 77.8 cm / 30.6 in Yes Zeta LT (Men's - Women's) Hiking 5/10 7/10 8/10 5/10 N/A No No No N40P-X 3L Gore-Tex Trim 335 g / 11.8 oz 78 cm / 30.75 in Yes Zeta AR (Men's) Hiking 7/10 8/10 7/10 4/10 N/A Yes No No 3L Gore-Tex Regular 425 g / 15 oz 80 cm / 31.5 in Yes
Performance data axis of synthetic jackets (table above) and shell jackets (this table) are different. Don't compare them.
Weather Resistance
This is the other important selling point of the Kappa. Owing to its synthetic insulation, it doesn't lose its insulating power when it gets wet.
- 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.
- 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
This is the most important advantage the synthetic jackets have over down jackets.
Lastly, like most other Arc'teryx, Kappa also comes with a DWR coating on top.
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.
Packability
Like I said, Kappa isn't packable at all. You must have a very good reason to pack it when traveling. I wouldn't recommend doing it at all.
If you're looking for something packable, then I'd recommend you to check out both Arc'teryx's Jacket Finder tool as well as my post on best Arc'teryx jackets.
Breathability
Kappa isn't breathable. But I don't complain about this because breathability isn't something that Arc'teryx tried to achieve with this piece.
After all, Kappa isn't designed for high output activities anyway.
Fit
My only complaint with this hoody is that it fits a little large. It feels somewhat bulky. Wish it came in a truly regular fit.
Yeah, Arc'teryx does advertise the Kappa as regular fit, but as you can see, I don't find this to be entirely true. I'd place its fit somewhere between relaxed and regular fit.
Conclusion
Kappa (Men's) can be a great option for you if you're looking to buy a warm jacket you can wear when it's freezing.
Keep in mind that it's not designed for high output activities, and that it might not be warm enough under 7 deg F (-14 deg C) with only a t-shirt under if you're like most people!