Durable, waterproof rough-out leather upper with rugged and lightweight 1000 Denier nylon. Space frame webbing design for increased range of motion. Speed lace fastening system for secure fit. Cushioning polyurethane footbed with additional layer of open cell construction for air circulation. Lightweight and stable performance of Danners TERRA-FORCE X platform. Vibram Rivot TFX outsole for superior grip and mobility featuring 360 lug pattern for increased pivotal movements.