Proton Sl Hoody Jacket color:BLACK Featuring both classic and bright

Featuring both classic and bright fronts

The waistband is designed for comfort and easy layering

layered in history

When your next mission calls for a little of everything

Proton Sl Hoody Jacket color:BLACK Featuring both classic and brightDescription 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.