Leatt ADV HydraDri 7.5 Short Boots. Waterproof, Protective And All-Day Comfort. Waterproof, breathable membrane: HydraDri® EVO: 20,000 mm / 20,000 g/m2 waterproof / breathable. Nubuck leather for durability with additional exterior waterproof treatment. Fit: Great comfort and fit even for wide feet. Closure: SlideLock system, Auto-locking one way sliding closure for great seal at top of boot. Forged aluminum buckles with Over-lock system and stainless-steel base. Bike Grip: Flat inner side profile with protective and grippy rubber / microfiber panel. Toe-Box: Shaped-profile, for easy gear shifting. Protection: Ankles: Flex limiter for improved boot control. 3DF Impact foam protection in ankle area. Shin: Impact reinforced shin plate. Heel: