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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.

very thin, warm. high perfomance Image: 5 Stars
by KIM YUN SUNG
very thin warm. high perfomance


great jacket Image: 5 Stars
by Anonymous
Stylish. Range of motion is excellent. Well made. Breathes nicely. Get compliments on jacket all the time. When using in cold weather layering is key though.


Smmooth Image: 5 Stars
by Howard Haines
Great jacket. Super light and a full range of motion.


Great! Image: 5 Stars
by jung hye kim
This is really Great. I think everybody should buy this. and I really like altrec's Customer service. It is really fast! Thank you.


Highly Recommended 4-season active/3-season casual Image: 4 Stars
by Anonymous
A great light thin and mobile softshell. Excellent fit and attention to detail. Solid water repellency and nearly impervious to the wind. Size: I am 5'11" about 170 pounds... I cycle so my weight is not in my chest I think I measure around a 42. I also have longish arms. The size large fits me comfortably. There is a little bunching in the sleeves but that ensures that my wrists arent exposed and the waist doesn't ride up when I stretch out. There is comfortable room in the torso for a sweater underneath. I may have wanted to try a medium if I was really after a purely athletic fit but I enjoy a little extra room for layering. I bought this jacket because I wanted something warmer. than my wonderful (but very light) GoLite Kinetic to wear around town and on backpacking trips when the temperature dips. I made a bad choice. This is not a particularly warm jacket. However the jacket fits so well that I am keeping it anyway. (damn do I look good in this jacket). I have owned Arcteryx in the past so I know that their products are top notch. I hope that I do not experience the same problems with fabric durability as the other tester has... but the construction of the jacket is great. It is very light easy to move around in and suprisingly warm for its lightness. Had I done a little more thorough research I would have realized that this fabric is not enough for the fourth season without a thick base layer and/or some cardio exertion to keep you warm. As it is even close to 35 degrees I can stay tolerably warm with a thick sweater underneath on my errands and it repels the rain and wind excellently. When I walk the dog in this jacket and I am running around it quickly becomes sufficient insulation at the currently just above freezing temperatures here. I have decided to pull out all the stops and order a down jacket to find that toasty winter warmth I am looking for but I couldnt bear parting with this awesome shell.