Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Arc'teryx - Alpha AR Jacket - Men's - Graphite
  • Arc'teryx - Alpha AR Jacket - Men's - Bombora
  • Arc'teryx - Alpha AR Jacket - Men's - Rohdei

Current Color

  • Arc'teryx - Alpha AR Jacket - Men's - Graphite
  • Arc'teryx - Alpha AR Jacket - Men's - Bombora
  • Arc'teryx - Alpha AR Jacket - Men's - Rohdei

Arc'teryx Alpha AR Jacket - Men's


Free 2-Day shipping on orders over $50*

Select a Size:

Select options
  • Select options
    • S
    • M
    • L
    • XL
    • XXL

    Select a Color:

    Select options
  • Select options
    • Graphite
    • Bombora
    • Rohdei

    11 Reviews


    Top dog on the mountain.

    Arc'teryx equipped the Men's Alpha AR Jacket with lightweight and high-tech features that caters to climbers and alpinists alike. Its fully taped, 3-layer Gore-Tex Pro shell ensures waterproof protection and breathable performance, yet the jacket itself manages to weighs in under a pound. Arc'teryx also designed the Alpha AR with WaterTight underarm zippers for ventilation and a helmet-compatible StormHood for secure coverage from bad weather. An athletic fit makes the Alpha AR Jacket slim for bulk-free comfort, and an e3D design ensures a full range of motion, yet ensures that the jacket stays in place. The laminated internal pocket protects your phone from weather and scratches. 

    • Lightweight jacket for vertical pursuits
    • N40p-X 3-layer Gore Tex Pro is waterproof, yet breathable
    • Regular fit makes for easy layering and reliable movement
    • Helmet-compatible StormHood features easy adjustments
    • WaterTight underarm zippered vents ensure temperature regulation
    • Adjustable cuffs and hem provide customizable protection
    • Item #ARC00KQ

    Tech Specs

    [membrane] Gore-Tex Pro (3-Layer), [face fabric] N40r-X (40D nylon)
    fully taped
    regular with e3D
    Center Back Length
    30.7 in
    yes, StormHood
    [external] 2 WaterTight zippered chest, [internal] 1 laminated security
    WaterTight underarm zip vents
    Claimed Weight
    13.6 oz
    Recommended Use
    alpine & expedition, climbing, hiking & camping
    Manufacturer Warranty

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    great jacket, little large

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

    got this shell for fairly hard alpine pursuits (winter in the Whites in NH, climbing several volcanoes in Mexico). Breathability and comfort is excellent -- warmer days ran with just a wool baselayer and the shell and was perfect temperature the whole way through, never felt the wind.

    The fit is slightly off though -- I've got the Dorito build (40" chest, 29" waist, 5'9"ish) so medium did alright, though the sleeves were a little long and the waist area was a little loose, since I sized for the chest to maximize mobility for ice climbing. Nothing problematic, cut was fine with a pack hip belt or harness over the shell -- and the extended length and hem, plus the pocket layout, meant it sat very well under a harness. By comparison I thought the beta shells were cut far too short to wear under a harness.

    Would buy cut again for sure (though maybe in another weight like the FL for variability)

    Try Arcteryx first. Save some time

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: XL

    I've had an Alpha SL for 4 years; it's my go to shell when it's snowing or just really cold. A great,light shell that's Seen a lot of use for four years; zippers still work, Velcro still holds.

    So I ripped a small hole in it skiing trees, washed it, repaired it, noticed it is slightly faded from the sun. I decided to upgrade.

    I shopped around and decided on a very nice Millet shell (from, ordered it, it arrived, I really liked it. Alas, a French XL is not a Canadian XL. A side by side comparison with my Alpha SL confirmed this. I also tried each on with all my layers on and my helmet. The Arcteryx allowed so much more freedom of movement I reluctantly sent the ( very nice) Millet shell back (thank you for making returns so easy, Mr. Backcountry) and ordered the Arcteryx Alpha AR. I've got around 10 days skiing in it so far and I highly recommend Arcteryx to anyone. You won't be disappointed.

    Try Arcteryx first. Save some time

    Not Too Long

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: Large

    I am short, with a long inseam for my height (5'6", inseam of 32") And it is miserable to find a jacket that is not too long. Fortunately the cut of this jacket is not super long and fit me quite well (although it would fit better if I had a longer torso)

    Super breathable so I don't swamp myself out, excellent quality construction that you would expect from a jacket in this price range. This isn't a crazy slim fit, so I can see why some people say it runs large, but I am not a slim mountain climber type, so I felt that it fit quite true to size.

    I have only used it a few times, but I totally love this jacket, as the weather gets nastier, the jacket really shows its potential.

    Good jacket. Wish for a better fit.

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

    I bought this Alpha AR along with the Beta AR. I ended up keeping the Alpha over the Beta only because of the collar on the Beta. The collar is stiff and didn't want to lay down to me it was very annoying. I wish the Alpha had the fit of the Beta. The sleeves of the Alpha are a little baggy. The chest fits very well and the length is good. I'm just under 6 feet and 165 lbs. I wear a small as I find this jacket to run large. Backcountry recommended a medium but glad I went with a small. I can fit a down light jacket under it completely fine. I've recently had the opportunity to use this on a rainy hike. The hike was about 5-6 miles. It was not a strenuous hike, mild uphills with switch backs. The weather is typical southeast summer weather. Humid with the temps about 67-70. Rain was heavy at times but always falling steady. I was wearing a quick wick t-shirt and the same in hiking pants. The pace was about 2.5-3 miles per hour. This information to me is important to understand if the jacket really is breathable and well ventilated. At no point in my hike did I feel hot, and at the end I was not sweating. I never opened the vents however I do feel that on a more strenuous hike the vents would have needed to be used. The rain never reached the inside. It also did not show any signs of wetting out.
    Overall good jacket, breathes well, waterproofing works as designed. The fit could be slightly better. I would recommend that if you want a more athletic fit size down. Happy with the jacket.

    Great jacket, soso fit.

    • Fit: Runs large
    • Size Bought: Medium

    This is my first Arc'teryx product and I've eagerly awaited it's arrival. It's clearly a superior product in materials and craftsmanship, and it's light as a feather!

    The only downsides I can seem to find are the fit, and the length of the sleeves.

    As other reviews have stated, there is a lot of extra material in the shoulder areas, which is really a bummer. I'm 5'9, lean/athletic, 150lbs, and after pouring over the internet and getting help from a backcountry rep,I went for M size. I wasn't able to try one on beforehand because I'm currently living in Japan. I had to order it to the US and have it forwarded due to international shipping restrictions on the Arc'teryx brand.

    The extra material in the shoulders only furthers the extra bunched look thanks to the length of the sleeves. I'll have more room to layer than I really need... The length of the jacket itself is great, the hood is a bit roomy, but that's easy to fix with the strap system.

    I am confident that even the Japanese rainy season will be no match for this jacket, and it will be a great companion in my winter trek through Hokkaido's national parks later this year. I only wish I had gone with an S size and wasn't stuck with a M due to international shipping/forwarding. Don't make the same mistake I did!

    I wanted to love this jacket...

    • Familiarity: I returned this product before using it
    • Fit: Runs large
    • Size Bought: Medium

    I can relate to another review in this post regarding the sizing and fit of this jacket. First, I am a huge Arc'teryx fan and love the quality of their products. After doing much reading/research I took the plunge and purchased the Medium Alpha AR. No local retailer carries it, so I did not have a chance to try it beforehand.

    This is a sharp looking jacket (on the hanger). The materials, construction and finish of this product were spot-on as you would expect for a ~$500 jacket. The issue arrises with the fit, there is entirely too much space/fabric around the shoulder areas of this jacket. At first I thought perhaps I just need to layer up and see how it fits. I put on a fleece and the Thorium AR jacket as base layers and tried again. Unfortunately, there were still bunches of material around shoulder area of this jacket. There is a fine line between having enough material for unimpeded movement in the shoulder/upper arm area versus it being excessive - for this jacket it falls in the later.

    I have a lean/fit climbers build - the body fit seems on par, the arm length is on the long side (and I have long arms) but I would expect this with this style of jacket, but the shoulder "situation" is just excessive. I cannot think of a good design reason for there to be so much room/fabric in this area of the jacket. If I turned into the raging Hulk is might be good fit(?)

    I am returning this jacket and will likely get the Alpha SV. I am familiar with the Alpha SV and it does not have the baggy shoulder situation going on. As another reviewer pointed out, the Alpha SV has a more true athletic fit then this jacket.

    Sharp, well made jacket, just seems to have a "wonky" fit.

    Now I just have to wait for another 20% coupon to get the SV!

    One hickup but a great shell

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

    I’ve had this jacket for a little over a year and I love it. I’ve used it for everything from downpours to blizzards in the mountains and it’s kept me dry for just about all of it. When I first got it I wore it in a storm in Dutch Harbor, AK after about an hour I noticed the water had stopped beading up and it just looked like the melted snow was soaking into the top layer of the Gore-Tex. I was still dry inside the shell but I was a little puzzled. The next time I wore it in the rain I watched the top layer soak up the water again. I wasn’t ready to give up on it and just figured I got the 1 in a 100 jacket that makes for a 1 star review, so I treated it with Nikwax. After treatment the water beaded right off the jacket and I have only wet out once but that was on a backpacking trip in Seward and it was pouring the whole time. Other than that speed bump this is a great shell. It breathes well, has room for layering while not being too bulky, all the futures are well thought out and perform great, and if you’re like me and run hot the pit zips are indispensable.

    Finally a technical jacket for a big guy

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: XXL

    I am broad shouldered, short [5'11"], stocky [220 pounds], with thick legs. Finding technical clothes that work well with me has always been a challenge. Love Arc'teryx but as a rule, they have seemed to run 'small' on me for whatever reason. The Alpha AR XXL really works well for me. The caveat here is I have not yet used this jacket for its intended purpose - as a hard shell during winter mountaineering. Time will tell if it will vent and breathe the way I hope it will when putting out a lot of effort. By the looks of things, I would say it will perform very well. Plenty of vent zips, Gore-Tex Pro, lightweight yet durable. Will keep you posted on how it does later this fall/early winter


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

    This jacket is super lightweight, tough, and extremely waterproof. This my main mountaineering jacket and holds up in any weather without being too hot. I worn it through a few blizzards and with a good insulating layer underneath its perfect. The hood is easy to adjust to keep it out of your way also.

    Exceeded my expectations

    • Familiarity: I've used it several times
    • Fit: True to size

    I'm not sure why kko is so critical of the size cut when the product description states clearly that it is an athletic cut, not trim. To give others reference, I am 5'9" with a 44" chest and broad shoulders and found the L to fit me almost perfectly. An extra inch or two in the chest would be nice for my torso, but it would not be worth the extra sleeve or waist lengths in the XL. There is zero restriction in the shoulders when moving my arms in any manner. Also, there are definitely 3 hood cords for adjustments. Overall, this is as close to a custom fit jacket as I could probably ask for.

    I choose the Alpha AR after doing online research only (no local retailers carry this), and it has exceeded my expectations. The new GoreTex Pro fabric is incredibly lightweight and bomber in the elements...the exact specs I needed for the demands of hiking in the ADK's year-round. In recent -20 F wind chills, the icy chill didn't come through the jacket at all. Snowflakes are brushed off the shell with a quick flick of the hand. The Alpha AR seems up to the challenge of whatever the mountains can throw at it.

    Not quite

    • Familiarity: I returned this product before using it
    • Fit: Runs large

    When I ordered this jacket i had high expectations. I really liked the idea of a light weight hardshell that could still take a beating. I had used an older alpha SV from arcteryx for many years and it was superb. The cut, features, and detail were all spot on.

    Unfortunately I can not say the same of the Alph AR. Here is why:

    First, the cut is not the same, "tailored" fit the Alpha SV, and almost all other arcteryx pieces have. It is a bit too baggy in the arms, creating extra folds, while being a bit too constricting in the shoulders/upper chest area. At the same time, the area from the chest down seems to be a bit too baggy. This cut, doesn't really help layering, while adding a lot of material.

    Second problem: the hood only has 2 way adjustability! No 3 way fore-aft adjustability! At this level I thought 3 way adjustability was a foregone conclusion.

    Overall this is probably still a good jacket for most people. But for everyone who is going to be using this jacket day-in and day-out these things will get annoying real fast.

    Overall I'd give this a 3.5 stars, but since I can't I''m going with 3.

    BTW, I tried on a new Alpha SV, and the cut, features, and finish, were even better than my old one. I went with that instead.