acerbis stivale x rock mm twoUpper made of cut and abrasion resistant leather and microfiber Articulation in the ankle area Tibial protection with anatomically shaped lower and upper shin guards Shaped heel protection to facilitate gear shifting during starts Medial and toe protection made with specially ribbed plastics for better impact absorption TPU insert with differentiated density in the gear shift area for maximum control Grip Burn Guard made of heat and wear resistant