Proton Sl Hoody Jacket size:LRG built to be your everyday

built to be your everyday go-to and a future classic

Not sure what conditions will be on the mountain

The Ezra Shirt blends cotton with a touch of stretch in an oxford stripe that moves comfortably through warm weather

a relaxed crown

Proton Sl Hoody Jacket size:LRG built to be your everydayDescription The lightest, most breathable option in our Insulation Collection, 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 shapeno matter how often you stuff it into the bottom of your pack. More importantly, it allows your body to breathe, so youre not left a sweaty mess after you have to step on the gas to get through the crux.