Snowy days have met their match in the Bogs Kids Classic II Unicorn Awesome. 100% Waterproof. Constructed with 7mm Neo-Tech waterproof insulation. DuraFresh natural bio-technology activates to fight odors. BOGS Max-Wick evaporates sweat to keep feet dry. Durable, hand lasted rubber over a four-way stretch inner bootie. Self cleaning outsole. BLOOM ethylene vinyl acetate footbed. Easy on handles. Comfort rated to -30F/-34C. Reflective temperature rating mark on heel. Removable insole. Textile and synthetic upper. Textile lining and insole. Synthetic and leather outsole. Please be advised that a white wax film may appear on the surface of the rubber boots and the brand states that it can be wiped off with a damp cloth. This "blooming" effect is not a defect. Blooming is caused when the boots are exposed to extreme temperatures or temperature swings and the wax helps prevent the rubber from weathering.