Design: Constructed with 7mm Neo-Tech waterproof insulation 100% waterproof protection Durable, hand-lasted rubber over a four-way stretch inner bootie to your kiddo’s feet warm and dry Reflective temperature rating mark on heel In-Shoe Comfort: Rebound cushioning provides all-day comfort and energy return BLOOM eco-friendly, algae-based EVA footbed that helps clean polluted water habitats BOGS Max-Wick evaporates sweat to keep feet dry Durability & Traction: Outsole design provides improved traction Additional Details: Comfort rated to -30°F/-34°C DuraFresh natural bio-technology activates to fight odors