Italy?s finest top grain leather is used as a base material with Microfiber being used on the tongue area. TA sole can be replaced by a cobbler. TA sole features excellent rear brake feel. Composite insole. Toe area covered in protective plastic. Rigid, shock resistant, anatomically shaped heel for maximum protection. Exclusive cam-lock buckle system. Cambrelle lining Replaceable bolt-on buckles. Non-bootie design. Split grain leather inner anti-wear/heat panel. Single Flex System upper. The Charger boot is 1.4 pounds lighter than Sidi's own Crossfire boot.