Waterproof Leather uppers. Waterproof Membrane. 200 Grams PrimaLoft Insulation providing warmth and comfort. Aluminized Strobel Construction for increased flexibility and comfort. 100% Recycled PET Microfiber Fur Lining. Anti Fatigue Removable Footbed, for support and cushioning. Gripstick and Green Rubber Outsole that is durable and shock absorbent. Lace up closure for a customized fit.