100% Waterproof - BLOOM eco-friendly algae-based EVA footbed that helps clean polluted water habitats - BioGrip outsole combines ASTM standard slip and chemical resistance - Durable hand lasted rubber with a four way stretch inner bootie - DuraFresh bio-technology that activates to fi ght odors - Lined with Bogs Max-Wick to absorb and evaporate sweat - Non-marking and self-cleaning slip-resistant outsole - 7mm Bogs Neo-Tech insulation - Comfort rated to -40AdegF/-40AdegC - Soft Toe (not a safety toe)