Features of the Merrell Women's Icepack Polar Waterproof Shoe Full grain waterproof leather Upper M Select WARM 200 gram Insulation with fleece lining Traditional lace closure Decorative carabiner buckle closure Kinetic Fit Base removable contoured insole for flexible support Nylon arch shank Molded EVA Midsole Breathable: Releases perspiration External moisture from precipitation Tread sheds Snow, water and ice Lugs designed to cut through ice Wet Snow, and wet ice specialized design