Metal eyelets for added durability Thermal Heat Shield insole captures warmth Compression-molded EVA midsole for cushioning KEEN.Polar Traction outsole for more grip on snow and ice Non-marking multi-directional lugs for increased traction 5mm multi-directional lugs for traction Stability shank delivers lightweight support KEEN.DRY waterproof, breathable membrane KEEN.WARM Recycled PET insulation rated to -25F/-32C Eco Anti-Odor for natural odor control Environmentally preferred premium leather from LWG-certified tannery