100% waterproof - Outsole with deep lug design provides better traction - Rebound cushioning provides all-day comfort and energy return - BLOOM eco-friendly algae based EVA footbed - DuraFresh natural bio-technology activates to fight odors - Max-Wick evaporates sweat to keep feet dry - BioGrip slip-resistant outsole - Comfort rated -22F/-30C - Soft Toe (not a safety toe)