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Arc'teryx Men's Gamma MX Jacket Arc'teryx: Men's Gamma MX Jacket

Made from wind-resistant and lightweight Polartec® Power Shield® fabric.

The Gamma MX Jacket features a new lightweight Polartec® Power Shield® fabric in a trim cut. It's isn't waterproof like other Ascent Outerwear but it offers an amazing warmth-to-weight ratio in a breathable wind-resistant package. Unlike most conventional fleece Polartec® Power Shield® fabric is exceptionally resilient to wear and won't snag like other fabric designs. The Gamma MX is suitable for mountaineering or ice climbing under blue bird skies and it's practically bulletproof when layered beneath a waterproof breathable shell like the Arc'teryx Theta AR Jacket or the Beta AR Jacket. If you're into gear and gadgets you'll appreciate the five storage pockets--more carrying capacity than most Ascent outerwear--including a sleeve radio pocket. Interior wind flaps and an adjustable hem drawcord help seal out cool breezes.

Fantastic jacket!!! Image: 5 Stars
by Anonymous
I just have to rave about this jacket. It is one of the finest articles of clothing I've ever owned. The warmth fit and build quality are just incredible. Regarding warmth I can't believe that a jacket this light and thin can be so warm. I've worn it with light and mid-weight underlayers in temps down to 10F and it is fine. People see it and ask if it is warm enough. Kudos to Arcteryx and Polartec for the PowerShield material. Regarding fit I'm 6'3" 195 lbs and usually have to buy XL to accommodate shoulder width and sleeve length but then the garment is quite loose in chest (43" chest)) and torso (36" waist). With Arcteryx the fit of the L size is just perfect for me and I have full range and fit in the shoulders and sleeves. Now I have a new problem -- most of my underlayers are XL and bunch up under the trim fit of this jacket. So off to get some Arcteryx underlayers in size L. Note: these pieces are athletic/trim fit so if you want loose they are not right for you. Finally build quality is excellent. It's obvious that Arcteryx takes the details seriously; for example the waist drawstrings are operable from within the side pockets and the loose ends are contained and the pocket zipper pull tabs are nicely hidden but also easily accessible with gloves. Small things like these make a difference and expectations are high at this price point. You're paying a lot but isn't it better to spend $250-300 on a jacket that you'll love and wear all the time vs. $150 for something that you don't like and leave in the closet?


forgot i had it on Image: 5 Stars
by David living in Berlin
I went camping this summer on the ocean in northern Germany and I lived in this thing the whole time. It is the only warm thing I take along on summer/mild-weather trips. It replaces sweater vest and windbreaker. You can leave it on all the time. I even slept in it during a cold rainy spell and it was a comfy as any pyjamas. It is right 24 hours a day in a wide temperature range. And I would ditto the other reviewer: It makes you loook and feel fit! By the way once you get used to the wide Arcteryx collars you realize the advantages. The design is not an accident. The collars breathe well and do not constrict movement. You can always wear a turtleneck base layer if you are sensitive or skinny-necked like me. I am not into writing reviews but I am happy to make an exception and share my appreciation for this product.


versatile layer Image: 5 Stars
by Allan
This jacket in a medium fits my 5'10" 165lb frame just right for active outdoor activities. It cuts the wind very well and is just warm enough to be comfortable in winter conditions while moving. At the same time it breathes well enough to keep me dry. I'll be using this jacket often as it provides an ideal combination of function and light weight.


Must have!!! Image: 5 Stars
by Dallas Peters
This jacket is bomber!!! Very light weigth. Althletic cut. The collar is a bit larger but nothing to worry about. Very comfortable. Not to mention it is the best looking softshell around. Gotta buy it.


Excellent Image: 5 Stars
by J
I've had the Gamma MX for two years now. What amazes me most is the range of motion. When the temperature drops I have no problem playing golf in this jacket. The fit is outstanding.