Genuine leather panels. 600g thermal insulation. Sympatex - Weatherproof Technology. Windproof, waterproof, and breathable. BOA® dual zone configuration delivers a customized independent fit to the cuff and forefoot for premium performance. H4 Coiler BOA® dial allows the wearer to adjust the tension of the dial with minimal effort. Dual stitched paneling for extra durability. Reinforced upper for increased stability and protection. Dual pull straps. Pant gaiter attachment point. Durable rubber sole to minimize wear against running boards. Rubber toe and heel cap for added strength. Slip resistant rubber outsole for exceptional traction.