The Salewa Men's MTN Trainer Mid GTX Boot is a summer boot for mixed and Technical alpine terrain. The Gore-TEX; membrane provides waterproof/breathable protection against the wet stuff, be it rain, Snow or ice you may come upon. Lighter than a winter boot but plenty durable thanks to a suede leather and fabric Upper. The Flex Collar adds flexibility at the ankle while the Vibram; Wrapping Thread Combi sole is durable for the changing terrain. Features of the Salewa Men's MTN Trainer Mid GTX Boot 3F System connects the instep Area of the shoe with the sole and heel; ensuring flexibility, support and the correct Fit where it's needed Climbing Lacing offers Climbing Lacing offers accurate adjustment in the toe-Area of your shoe, giving you more support and Performance when tackling Technical terrain The innovative multi-layer MFF+ allows for more customization on the forefoot by using two interchangeable layers to accommodate a greater range of foot shapes and sizes Ergonomic, long-lasting and durable cushioning. Its ergonomic shape and mechanical properties provide superior shock absorption even on steeper terrain for greater comfort than a standard sole The Flex Collar increases the ankle's rear range of motion and comfort during descents, thanks to a curved shape that follows the plantar flexion of the ankle