The Sidi Crossair Boot, a fusion of agility and resilience, is tailored for the dynamic rider. Its innovative design offers a blend of lightweight flexibility and robust protection, ideal for navigating the rigors of motocross with confidence and style. The Sidi Crossair Boot: the lightest professional boot ever crafted, merging superior performance and safety. Favored by professional riders in Motocross, Hard Enduro, and Superenduro, it delivers the strength of premium Sidi materials in an astonishingly light package, weighing just 1665 grams (size 43) - significantly lighter than its competitors. This boot features an internal fiberglass-reinforced exoskeleton for robust support and safety, while keeping the construction impressively light. The lightest premium level MX boot available, size 9 = 3.75 pounds. per boot. Constructed of Technomicro® Microfiber, which is lighter, more durable, and resistant to water than leather.