We've made our Kids' Classics even better. The new outsole not only provides better traction, but its added flexibility promotes natural foot movement and healthy foot growth. In these, you'll never hear your kids complain about wet or cold feet. 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 Flexible outsole promotes healthy foot development Nylon footbed shank for stability and support Bio-based footbed provides comfort while minimizing environmental impact Easy on handles Comfort rated to -30F/-34C Reflective temperature rating mark on heel