Black Diamond Women's Mercury Mitts Gore-Tex Cold Weather Mittens Shell: 92% Nylon, 8% Spandex, 100% Goat Skin Palm, Lining: 100% Polyester Imported 100% waterproof and breathable GORE-TEX insert with XCR Product Technology stays with removable liner Lightweight, abrasion-resistant, Pretext Shield shell with 4-way stretch Removable liner features 170 g Prim aloft Gold insulation, 100 g fleece on back of hand and high-loft fleece on the palm