Danner Vertigo 917 Boots combine classic styling along with innovation in this new modernized boot. This 5" boot is ideal for the urban explorer combining technical Vibram midsole and outsole, full-grain leather upper and waterproof GORE-TEX liner. The entire footbed is made of open-cell polyurethane for better air circulation and heat dissipation. Danner offers a 365-day warranty if your boots are not up to standards, or is defective in any way.