Design: 100% waterproof protection Zip closure and heel pull loop for easy on and off In-Shoe Comfort: BLOOM eco-friendly, algae-based EVA footbed that helps clean polluted water habitats Rebound cushioning provides all-day comfort and energy return Faux fur lining for warmth and comfort Additional Details: Comfort rated to -13°F/-25°C DuraFresh natural bio-technology activates to fight odors Recycled materials used in outsole, footbed, lining, and upper fabric and webbing