As most of you already know, I've been sharing helpful guides to all kinds of Arc'teryx jackets for the last couple of years now (find full post list at the bottom).
CAUTION: Fission SV is NOT designed for high output use (lacks breathability). If you're not OK with this, then STOP READING THIS POST RIGHT HERE and go see my guide to Arc'teryx Jackets to find out the right jacket for your own needs.
Summary
Despite its minor flaws (loose collar configuration & rough zipper flow), Fission SV would still worth getting. Because no other jacket can be even nearly as warm, windproof and waterproof at the same time. In other words, it mostly has no alternatives to it out there.
Yes, these flaws can be annoying. But I don't think they're a deal-breaker (at least not for me).
- 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
Warmth
In Arc'teryx's line-up, the Fission SV is the warmest synthetic insulated jacket:
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.
In most cases, Fission SV can be a great option for stationary use in quite cold (think below 10 deg F's (-12 deg C's)) AND wet AND windy conditions.
The loose collar configuration might let in a little bit too much cold for you. Shift these temperature ratings accordingly if that's you.
Now...
This degree of warmth is really great, but isn't something we aren't used to. There are equally warm and even warmer jackets out there. Hell, this bad boy *slaps jacket* from the LEAF neighborhood keeps you warm out at degrees as low as -40 deg F / -40 deg C!
You don't need me to tell you that this is crazy.
So, as you see, the warmth capability isn't really what makes the Fission SV special and irreplaceable.
So let's move on to take a look at other things.
Weather protection
As you might have realized, the Fission SV is advertised as "fully waterproof" by Arc'teryx.
Now this isn't wrong.
Combination of N80p-X GORE-TEX 2L face fabric and a DWR coating repels the water perfectly well. It prevents the water from getting soaked into the fabric, too.
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.
The job it does in this department is actually even better than the Fission SV's warmer synthetic insulated alternative Dually Belay (hence the higher price tag).
Hell, I can even say that it'd be very, very, difficult (or maybe impossible?) to find a more waterproofing outerwear than the Fission SV.
Having said that... Just a heads up:
Waterproofing is NOT black and white. There is no fully "waterproof" textile out there, and won't be in the near future.
Some clothing materials are more waterproof than the others, and vice versa. Given the right amount of time and intensity, all clothing materials will soak water in.
The advantages and superiority put forward in the waterproofing department for the Fission SV goes the same for windproofing as well.
It offers incredible windproofing capabilities.
Poor breathability is actually a result of this very intention.
When you intend to make a jacket fully windproof, you inevitably end up having to sacrifice breathability in return.
Now having mentioned all these facts around waterproofing and windproofing...
We still didn't find an answer to our question as to why the Fission SV has no alternatives (because although the Fission SV is top notch in these areas, there are jackets with comparable capabilities out there).
Offering warmth & weather protection at the same time
This is the answer we're looking for here.
This, actually, can only be achieved with synthetic insulated jackets (since down mostly tend to lose its insulating capability under damp conditions).
Offering warmth & weather protection at the same time is what makes the Fission SV so special.
I've yet to find a jacket that offers the same (or nearly as much) amount of warmth, waterproofing and windproofing as the Fission SV.
Actually, please do reach out to me and let me know if you do come across one.
Features
Like I said, the zippers might feel fiddly for some of you. They don't slide as easy as some smooth, non-technical jackets.
Additionally, it's a little bit difficult to insert the main zipper into the bottom slider. Can be annoying, but I don't think it's a deal-breaker - at least not for me.
Lastly, here's the product video: