FEATURES of the Bogs Women s Classic Casual Lace Leather Boot 100% Waterproof Built with recycled materials Constructed with gold certifi ed leather Constructed with Neo-Tech waterproof insulation Rebound BLOOM algae based footbed provides cushioning and helps clean polluted water habitats DuraFresh natural bio-technology activates to fight odors Comfort rated to 5-¦F/-15-¦C.