WATERPROOF: KEEN.DRY waterproof breathable membrane keeps feet dry in wet terrains; Integrated mesh liner INSULATED: KEEN.WARM made from recycled PET plastic with 200G insulation helps keep feet warm in temperatures down to -25° F / -32° C but still allows feet to breathe ICE GRIP & WARMTH: KEEN.FREEZE outsole for cold weather reduces rubber hardness and improves flexibility while walking on snow or ice; Heat reflecting board provides a thermal barrier MATERIALS: Waterproof oiled premium leather upper for improved durability; Environmentally preferred premium leather supplied from certified tanneries CARE TIPS: To treat day to day wear and tear KEEN recommends using a leather cleaner and conditioner found at most footwear dealers or shoe repair shops