100% Waterproof - BLOOM eco-friendly algae-based EVA footbed that helps clean polluted water habitats - Constructed with 7mm Neo-Tech waterproof insulation - New higher abrasion upper textile plus embossed lining with air flow channels - DuraFresh natural bio-technology activates to fight odors - Bogs Max-Wick evaporates sweat to keep feet dry - Durable hand-lasted rubber over a four-way stretch inner bootie - Self-cleaning outsole - Comfort rated to -40F/-40C - Soft Toe (not a safety toe)