Designed for life on the move, the Arc'teryx Atom SL Hoodie is your ultra-light ally against unexpected chills. Packing a punch with Coreloftâ„¢ insulation precisely where you need it, this hoodie's wind-resistant Tyonoâ„¢ 20 shell and DWR finish shed off light rain, while stretchy side panels enhance breathability. With a stowable hood, it's adventure-ready - anywhere, anytime. 100% Nylon, Coreloftâ„¢ Insulation, Stowable Adjustable StormHoodâ„¢, Mesh Lined Sleeves, Drop Back Adjustable Drawcord Hem, Fleece Stretch Side Panels, Durable Water Repellent Finish, Compressible & Packable, Arc'teryx. Arc'teryx Men's Atom SL Hoodie in Vitality Ii, Size X-Large