FEATURES of the Bogs Women's Classic Ultra High Black Boot 100% Waterproof Natural hand-lasted rubber and a four way stretch inner bootie 7mm Bogs Neo-Tech insulation Bogs Max-Wick moves sweat away from your foot to keep you dry DuraFresh bio-technology activates to fight unwanted odors Dual-density, contoured EVA footbed with on-slip, non-marking and self-cleaning outsole with BioGrip Internal midsole with rubber sponge delivers extra cushion and warmth