This Cerium is one of Arc'teryx's warmest versions yet. Goose down provides serious cold-weather performance, with synthetic insulation placed in areas prone to moisture. A durable wind-resistant outer helps keep weight to a minimum, while the adjustable hood locks in warmth without restricting visibility. When conditions improve, it packs away with surprising ease. 100% Nylon Shell Pertex® Diamond Fuse 20d Ripstop Wind & Moisture Resistant Lining: 100% Grey Goose Down 2 Way Zip Closure Helmet Compatible Storm Hood™ 2 Internal Pockets 2 Side Pockets Adjustable Hem Embroidered Branding Style Code: X000010521-000980