Arc'teryx - Proton SL Hoody Mens - Dk Str/Blk Sapphire

The Proton SL Hoody takes the guesswork out of warming up on cold climbs and other high-output activities in cool conditions. The knit insulation holds its loft and shape-no matter how often you stuff it into the bottom of your pack. More importantly, it allows your body to breathe, so you&';re not left a sweaty mess after you have to step on the gas to get through the crux.