Arc'teryx Proton Heavyweight Hoody – Men's High-Performance Insulated Jacket for Cold Weather

Created to offer the breathability, durability, and mobility guides and mountain professionals demand, our warmest Proton delivers air-permeable thermal performance for high-output missions in cold conditions. 100gsm Coreloft insulation and the Fortius Air 50 outer allow airflow that helps speed vapour transport and balance thermal comfort. 60gsm Coreloft in the sleeves and helmet-compatible StormHood reduces bulk, the regular fit layers easily, and articulated patterning removes restriction. The Arc'teryx Proton Heavyweight Hoody for men is built to withstand the toughest outdoor conditions. Designed with advanced synthetic insulation, this hoody offers superior warmth without compromising on breathability or mobility. Features: Advanced Synthetic Insulation: Features premium insulation to trap warmth while allowing moisture to escape, ensuring you stay dry and warm in cold conditions. Versatile Layering Piece: Lightweight yet highly effective for layering, perfect for winter sports,