The Arc’teryx Proton Hoody – Men’s is a highly breathable insulation layer engineered for climbers and high-output mountain pursuits where temperature regulation is critical. Designed to be worn on the move, it pairs 80gsm Coreloft™ Compact insulation with an air-permeable face fabric and liner to manage heat and moisture during sustained effort. The Fortius™ Air 20 nylon shell balances airflow, wind resistance, and durability, while articulated patterning ensures unrestricted mobility on technical terrain. An insulated, helmet-compatible hood extends warmth without compromising fit or visibility. Updated with a PFAS-free FC0 DWR finish, recycled-content face fabric, and stretch-enhanced insulation, the Proton Hoody delivers improved comfort, breathability, and performance. Versatile and efficient, it’s an essential midlayer for fast-paced missions in cool, variable conditions where traditional insulation would overheat.
- Highly breathable synthetic insulation for high-output alpine use
- Coreloft™ Compact insulation performs when wet and regulates temperature
- Air-permeable Fortius™ Air 20 shell with articulated, fitted design
- Winter 2025/26 product
