100% Waterproof from top to bottome to keep feet warm and dry. DuraFresh natural bio-technology activates to fight odors. BLOOM eco-friendly, algae-based EVA footbed that helps clean polluted water habitats. Outsole built with 20% recycled content. BOGS Max-Wick evaporates sweat to keep feet dry. Rebound cushioning in midsole provides all-day comfort and energy return