Arlen Ness A-Spec Boots (White, Size 13) Perforated leather upper guarantees comfort as well as excellent breathability to keep you cool Titanium ankle plate helps deflect direct impact to the ankle Magnesium toe sliders are installed on each boot and are replaceable Additional magnesium sliders found on the top of the boot and on the heel help prevent the boot from catching in the event of a crash TPU midsole with steel shank provides a great balance of stiffness and flexibility