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.