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Although soft to the touch and subtle in appearance, the redesigned Arc’teryx Sidewinder Jacket is poised to strike the fiercest conditions you throw at it. With its relaxed fit, articulated sleeves, and offset WaterTight front zipper, the Sidewinder fits and feels like a second skin. The only difference is that this skin has perfectly evolved to feast on the nastiest winter conditions available.

  • The very densely woven face fabric offers exceptional long-term water repellency that won't 'wet out', and it is still soft to the touch
  • Waterproof breathable N80p-X Gore-Tex 3L blocks the nastiest winter storms while remaining breathable so the inside of your jacket doesn't become a sauna
  • Flannel backing on the inside boosts your warmth up a notch
  • The offset front zipper makes the Sidewinder great for layering and avoiding zipper stack
  • A relaxed fit and articulated sleeves allow for a maximum range of movement during aggressive descents
  • WaterTight underarm zips allow you to vent out when things start to warm up
  • The fixed StormHood is designed to fit over a helmet so you can protect your noggin and keep it warm too
  • Powder skirt is equipped with a stretch panel and new Slide’ n Loc snaps so you can keep your torso warm and dry and put the powder in its place
  • Comes with a RECCO reflector in case you wander a bit too far from the beaten path
  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

Love at First Touch

  • Familiarity:I've put it through the wringer
  • Fit:Runs large

The first time I put on the jacket I knew it would be perfect. I was really hesitant to buy it becasue I thought it might be a soft-shell or have too much insulation. It is most certainly not a soft-shell and the fleece lining provides no warmth for all intensive purposes. The fleece that lines much of the interior of the jacket is extremely thin and just makes the inside of the jacket soft to the touch, I've done extensive touring in this thing and I can say the lining adds zero heat. The pockets are great, the zippers are completely sealed, the seams have never wet out and the cut is clean and looks great! It fits on the baggier side for Arc'teryx products but as long as you know this going in it shouldn't be a big deal. The little bit of excess material is actually really nice to have for layering in really cold conditions. The hood is really large, too big unless you're wearing a helment. This jacket doesn't have extra whistles and bells, there are only as many pockets as you need and just a shell, great for resort riding or full on touring assalts. Very happy with this jacket and looking forward to wearing it for many seasons to come.

hells ya

  • Familiarity:I've put it through the wringer
  • Fit:True to size

Just got it this season but so far it's kept me toasty in -20'F, freezing rain and 40+ mph winds. I've been wearing Arc'teryx shells for over 15 years and they just keep getting better. The sidewinder is a very relax fit. I'm 5'9" 210 lbs and the large is a bit roomy, especially the sleeves but still damn good.

The offset front zipper is a big plus, it looks good around town and whenever it's windy enough to make the big side flap around I'd rather have it all zipped up so it's not "cumbersome" for me at all.

I layer the Thorium AR for seriously cold weather and it's perfect fit and balance with the Sidewinder.

Best Shell I've Ever Owned

  • Familiarity:I've put it through the wringer
  • Fit:True to size

It's rare for me to give 5 stars to anything, but this shell deserves it. I usually wear a soft shell or fleece on mild days, and a shell in storms, wind, and/or extreme cold. I ski a lot in the Eastern Sierra and it is known to be very windy. 60+mph on the ridge lines. I've never owned a shell as windproof as the Sidewinder. Absolutely amazing. This is probably due to the GoreTex ProShell, so any shell with this material would be a good one to consider. During moderate mid-season whether (28-35 F) the breatheability of the shell was top shelf. While skiing aggressive lines there wasn't a drop of perspiration on the inside of the shell (I usually wear a base layer and a 1/4 zip underneath in weather above 25 F). Even on the rare occasion I'm wearing it on a blue bird day (34 F) the breatheablity and the pit zips make it very comfortable. I contemplated buying this shell for 2 seasons but held off because of the cost. Let's be honest, this thing is obnoxiously expensive. It sounds cliche, but I wish I bought it sooner. I'm 6'1" 185lbs the the L fit me well and has plenty of room to layer. I'm a advanced /expert skier and I didn't feel restricted once. If you are considering this shell, and your current gear is letting you down, spend the money. My previous shell was North Face. I'll never touch HyVent again. Nowhere close to the same ballpark as the ProShell Gortex in the Sidewinder. I promise you, after the season, you won't remember the cost of the shell, but you'll be satisfied with your investment and not freezing on the chair, during high winds, while wet.

Best Shell I've Ever Owned

Big Mountain Jacket

  • Familiarity:I've put it through the wringer

I have owned a number of the previous versions of the sidewinder jacket. The side zipper is definitely not for everyone. At times I find myself at odds with the zipper and find it awkward. However when zipped up you never really notice it.

The new YKK Aquaguard front zipper is a big improvement (what took arcteryx so long to use it). It is more waterproof and seems less air permeable. I love the 3 pocket design plus arm pocket. the bellowed napoleon pocket is perfect for stashing a variety of gear. Inner pockets are a nice size to hold goggles and wallet.

The fit: I had to size down to a small to get the right fit (5'10" 165 lbs). I am usually a medium but it felt way too big all around even with a generous mid layer on. the arms are a perfect length for people with longish arms and articulated elbows move nicely during activity.

Overall Great design and fit, with well thought out features.

Love how it looks and feels

  • Familiarity:I returned this product before using it

Just received my Sidewinder today. Love it. Its like liquid as far as how easy it is to move around in it. I'm going to change to a smaller size though. I'm 6'1" and 195# and got an XL which is too baggy. Otherwise looks like a winner.

High-Neck Softshell Jacket

  • Familiarity:I gave it as a gift but have feedback to share

I got this jacket for my dad for Christmas and he absolutely loves it. I bought the "Green Light" color and it's true to the photographs (which is rare when you buy online). It's the perfect color on the mountain (easy to pick out from a crowd). Also he raves about the high-neck and it's durability & warmth.

Excellent shell

  • Familiarity:I've used it several times

Just got this jacket for xmas-2012. Used it at Snowbasin & Powder Mtn. on some really stormy days. The thing is bullet-proof, has a really nice hood and chin covering. By layering up properly underneath thisshell my body felt like I was laying around the living room!

Love/Hate The Zipper

  • Familiarity:I've used it once or twice and have initial impressions

So, like a lot of Arcteryx gear, this jacket seems to have taken a direct aim at fixing the problem of a minority of users. Namely, the offset top of the main zipper which some people don't like having right in front of their face when the weather is wet/cold. I can see the idea, and I appreciate it. When I was a kid in the Midwest, I got the constant chafing of a crappy zipper under the nose when skiing.

But I think solving the zipper issue created other issues with this jacket. The collar seems strangely stiff on one side if you have it zipped but don't have the hood up. If you leave it open, the flap is longer on one side and tends to flap more. And, though the offset zipper helps with "zipper stacking", it defeats any attempt to vent with a 1/4zip underlayer.

So, though I've used this one a few times, I helped it find a new home with a friend who LOVES it for the zipper. If he reviews it, he'll give it a 4-5 star rating.

Hi! Which jacket is actually bigger(more...

Hi! Which jacket is actually bigger(more relaxed): sabre or sidewinder?

I am 5'9" and 185lbs what size do you think...

I am 5'9" and 185lbs what size do you think that I should get m or lg.?

I second the medium, I'm 5'9' 210. I love my large, but I'll admit it's a bit big. Never tried the medium but thinking it would have been a good idea as the extra sleeve length is pretty annoying when I'm not wearing gloves. Either way, you're going to be happy with this jacket!

What are the differences between the latest...

What are the differences between the latest Sidewinder and Sidewinder SV? Has the Sidewinder been updated like the SV has?

Jahan - fit and fabric are the two key differences:

Sidewinder SV - Expedition fit and Gore Pro 3L (577 grams)

Sidewinder - Relaxed fit and Gore Pro 3L with lo-loft softshell construction (693 grams)

The Sidewinder SV weighs less and has a higher volume fit to accommodate multiple layers. The lo-loft softshell construction found in the Sidewinder means the fabric has a softer hand and a lo-loft flannel backer, so it will be warmer. The Sidewinder has a slightly lower volume fit but still has enough room for your standard base/mid layers.

mppp, the jacket is a hardshell as far as the performance goes, but Gore makes a material they call Gore Tex softshell that's a bit softer than their proshell material. The proshell is slightly more breathable, a couple grams lighter, but is also stiffer and more crinkly.

I would appreciate if someone could comment...

I would appreciate if someone could comment on the fit of this jacket when compared to the Theta AR.


In my opinion, the Theta has a more athletic fit, but leaves less room for layering. The Sidewinder is a more relaxed fit. I have the Sidewinder SV, and really like it, but when I'm layered light underneath, it does feel a little baggy. No complaints though. I love it. I am 6'3" and weigh 190, and the XL works great. (The large felt a little restrictive in the sleeves)