SKU 9961443 The Arc'teryx® Proton Heavyweight Hoody is crafted from breathable Fortius™ Air 50 nylon plain weave that is lightweight and allows air into the system to move vapor out Lofty. Warm Coreloft™ Continuous 100 lightweight insulation allows air transfer and performs even when wet60gsm Coreloft™ in hood and sleeves for warmth with reduced bulk insulation. It features adjustable helmet-compatible StormHood™, providing warmth and coverage without impacting peripheral vision and long sleeves. Regular fit with articulated patterning for mobility and freedom. Elasticized binding on cuffs seals out drafts. Zippered front closure. Zippered hand pockets and zippered chest pockets. Two internal dump pockets stow gloves and toque. Brand logo on the left chest. Straight hem with adjusters. 84% nylon, 16% elastane. Machine washable. Imported. View Zappos.com Glossary of Terms Arc'teryx Proton Heavyweight Hoody