Durable, polishable full-grain leather upper with rugged and lightweight 1000 Denier nylon. Speed lace fastening system for secure fit. 100% waterproof and breathable GORE-TEX lining. Removable cushioning antimicrobial polyurethane footbed with additional layer of open cell construction for air circulation. Polyurethane midsole provides superior cushioning and added durability. New Danner TFX-8 platform is the lightest weight and most versatile TFX construction featuring a cross stitch design which provides added durability and stability in the lateral toe and medial heal pivot zones.