Upper: Full grain leather, S3 water resistant treatment. Lining: DELTA-TEX™ waterproof polyester membrane. Insock: Removable premolded - Polyester on EVA. Outsole: Injected - Dual-density PU. PU bumper protection. Optimum protection from bad weather and harsh environments Crampons, SRC standards Good grip on all types of indoor and outdoor surfaces Fast lacing Outsole with PU protection bumper Reinforced protection of the forefoot