The jacket that strikes a balance between excellent warmth, great fit and packability. Materials: 40 g/m² - 100% polyester face with DWR; 650 fill down; 67 g/m² - 100% Tier 1 recycled polyester lining Secure hand warmer and chest pockets Stuff sack 130 g Fill weight 485 g granite black Premium Goose Down Fill We use premium Eastern European sourced 800+ and 650+ fill power goose down in different products depending on the design and end-use. Down is still the most thermally efficient insulation