Our Outside Magazine "Gear of the Year" award-winning storm shell is engineered for fast-and-light alpine climbs and all-day lapping of untracked slopes. Innovatively lightweight and extremely breathable GORE-TEX® Active technology -- which is half the mass of the standard GORE-TEX® membrane -- provides the waterproof protection for which GORE-TEX® is famous, but transfers moisture like no other waterproof shell fabric available. The incredible breathability negates the need for pit zips, allowing us to further save weight in this amazingly streamlined, durable and functional shell. Grab the Axiom™ when you're planning a highly aerobic ascent in rugged conditions. Even if you start huffing and puffing on the fourth lap of your favorite backcountry stash, it'll still be breathing easy.