Other closure Ergonomic new last for foot streamlining and superior fit and comfort. Air mesh main construction is layered with highly breathable materials for superior ventilation and features over-injected soft PU reinforcements. Full grain leather on medial panel offers comfort and durability. Strategically positioned perforation zones on front and rear full grain leather accordions for enhanced ventilation. Waterproof and breathable Gore-Tex XCR membrane provides outstanding weather protection and ensures the feet stay comfortably dry in all conditions. The Air Plus v2 Gore-Tex XCR Boot’s innovative design features a waterproof and breathable GORE-TEX XCR membrane layered under a well ventilated mesh outer construction that ensures your feet stay comfortably dry in all-weather conditions. Dual-density ankle protectors together with internal heel and toe counters provide exceptional safety and support.