The Amanda Plush II Chelsea Green Ash is waterproof that features plush lining for warmth and comfort. The 100% waterproof boot also features a slip-resistant outsole, DuraFresh natural biotechnology, and BOGS Max-Wick to keep your feet dry. It also includes BLOOM eco-friendly, algae-based EVA footbed and steel shank in the outsole for stability. It is comfort rated at -13°F/-25°C.