100% Waterproof Slip-resistant outsole DuraFresh natural bio-technology activates to fight odors BOGS Max-Wick evaporates sweat to keep feet dry Plush lining for warmth and comfort BLOOM eco-friendly, algae-based EVA footbed that helps clean polluted water habitats. Steel shank in outsole for stability and support Soft textured rubber Comfort rated to -13°F/-25°C