Product Details + These boots tend to run small. When ordering, please select a half size larger than your normal street size. Four-wheel-drive performance for your feet. Waterproof leather, webbing, and mesh upper. Upper is made of environmentally preferred premium leather from an LWG-certified tannery. KEEN.DRY™ waterproof/breathable textile membrane keeps your feet dry and comfortable. S3 Heel Support Structure. Secure-Fit lace capture system. Removable metatomical footbed. ESS shank provides torsional stability for a secure ride. Dual density, compression-molded EVA midsole. Non-marking carbon rubber outsole with 4mm multi-directional lugs.