Bogs- Classic Rainbow 2 Boots100% Waterproof, constructed with 7mm Neo Tech waterproof insulation and BOGS Max Wick evaporates sweat to keep feet dry Comfort rated to 30F 34C, reflective temperature rating mark on heel Durable, hand lasted rubber over a four way stretch inner bootie with easy on handles Flexible outsole promotes healthy foot development and heel provides stability and traction. BLOOM eco friendly, algae based EVA footbed that helps clean polluted water habitats.