ARCTERYX–mens proton hoody -X000008436

Made for climbers – but not limited to rock and ice – the Proton  Hoody is the go-to breathable insulation layer for high-output mountain  missions. 80gsm PrimaLoft Gold Active Vent insulation works with the  air-permeable face fabric and liner to regulate temperature and vapour  build-up. The Fortius Air 20 nylon shell is light and durable,  articulated patterning removes restriction, and a helmet-compatible  insulated hood extends the warmth.