The Bogs Classics skulls kid's insulated boot features Subzero Neo-Tech insulation that keeps kids playing outside for hours. This 100% Waterproof boot is constructed with 7mm Neo-Tech waterproof insulation. The DuraFresh natural bio-technology activates to fight odors and Bogs Max-Wick evaporates sweat to keep feet dry. The side handles ensure easy on and off. It includes non-marking and self-cleaning outsole. It is comfort rated to -30°F/-34°C.