The Alpinestars Tech 10 Boots offer a breakthrough innovation with Alpinestars patented Frontal Flex Frame, providing a complete and seamless flexion control system. This design ensures improved overall functionality, performance, and safety while decreasing weight and material volume. The result is a boot with a greater range of movement and flexibility, offering better control over flexion and torsion forces. This enhances boot performance, giving the rider greater confidence and protection. The Tech 10 design is slimmer and more streamlined with a contoured calf protector ergonomically wrapping around the rear leg. Article: Alpinestars Tech 10 Motocross Boots, black-red, Size 47 for Men