WATERPROOF KEENDRY waterproof breathable membrane keeps feet dry in wet terrains Integrated mesh liner INSULATED KEENWARM 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 MATERIALS Waterproof oiled premium leather upper for improved durability Environmentally preferred premium leather supplied from certified tanneries ICE GRIP WARMTH KEENFREEZE outsole for cold weather reduces rubber hardness and improves flexibility while walking on snow or ice Heat reflecting board provides a thermal barrier 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