Outdoor Research Stormbound Mitts Shell: 68% Polyester, 32% Nylon; Cuff: 100% Acrylic; Palm: 100% Goat Leather; Lining: 100% Polyester; Insulation 1: 100% Polyester; Insulation 2: 90% Goose Down, 10% Feathers Imported Undercuff Construction Moisture Wicking Waterproof and Breathable Removable Idiot Cord