Proton Hoody Men's is an insulated jacket designed for climbing and ski & snowboard activities, built as a highly breathable synthetic insulation layer that helps regulate temperature and vapour build-up during high-output mountain missions. Product Type: Men's breathable insulated jacket Material: Synthetic Fill 80gsm Coreloft™ Compact insulation works with an air-permeable face fabric and liner Fortius™ Air 20 nylon shell is light and durable Helmet-compatible insulated hood extends warmth For a layered system for climbing and snow days, pair with a men’s shell jacket and men’s hiking pants . 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 Coreloft™ Compact 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. What's been updated: Updated with a PFAS-free DWR (Durable Water Repellent) treatment, Fortius™ Air 20 face fabric with 42% recycled nylon, and Coreloft™ Compact insulation for improved stretch and breathability. Need a lighter option? Try the Proton SL Hoody.