Features of the keen Women's Betty WP Short Boot Thermal heat shield insole captures warmth 200g of Keen. warm Insulation rated to -25AdegF/-32AdegC Metal eyelets for added durability Soft microfiber lining EVA Midsole for lightweight cushioning Eco anti-odor for natural odor control Keen.freeze rubber Outsole for traction in cold conditions Non-marking multi-directional lugs for increased traction 4mm Multi-directional lugs for traction External stability shank delivers lightweight support Environmentally preferred premium leather from LWG-certified tannery Keen.dry waterproof, breathable membrane Original Fit-iconic keen Fit with generous space across forefoot for toes to spread out Waterproof, premium leather Upper