Inspired by Sidi’s top-off-the-range Crossfire 2, Sidi prouly presents it’s little brother, the X-3. Fresh Colors and Design, this boot is ready for everything. Lined with air Teflon mesh and Cambrelle Upper in leather and Microfiber material Fully replaceable and adjustable spare parts Micro and replaceable Adjustable buckles Dual Flex System New adjustable system of the area between the protective calf-exaust and the front of the boot to allow a rider with a wider calf to be very comfortable. Nylon Inner sole MX-Ideal Sole This item cannot be shipped to the United States and Canada.