Proton SL Hoody Men's bottle while the backs benefit from

while the backs benefit from added breathability

padded top grab handle

Performance

• Hat compatible frame and temple design

Proton SL Hoody Men's bottle while the backs benefit fromThe 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. What's been