These Classic Casual Winter Zip boots are the picture of comfort, with their faux fur lining, their Rebound cushioning, and their 100% waterproof and recycled materials. It’s like sending your feet to a spa in the middle of winter. 100% Waterproof. BLOOM eco-friendly, algae-based EVA footbed that helps clean polluted water habitats. Rebound cushioning provides all-day comfort and energy return. DuraFresh natural bio-technology activates to fight odors. BOGS Max-Wick evaporates sweat to keep feet dry. Faux fur lining for warmth and comfort. Recycled materials used in outsole, footbed, lining, and upper fabric and webbing. Comfort rated to -13°F/-25°C