The lightweight upper part combines PU protections and microfiber inserts on the instep area to grant optimum flexibility, and abrasion resistance. The excellent structural support consists of two lugs that slide inside designed pockets, avoiding front and rear overextension while providing flex forwards and backwards, it is anti-torsion. On the upper side stamped suede to increase grip against bike and heat resistance. Internal toe and heel reinforcement for enhanced protection. The Closure System consists of 4 light alloy replaceable buckles for an easy, fast and precise closure. The first two buckles on top can be unscrewed and moved in order to accommodate a bigger leg or knee brace. All buckles are replaceable. Inside the boot soft foam reinforcement on ankles for long lasting comfort and shock absorption furthermore the textile mesh lining improve the air circulation and the comfort. The innersole is anatomical and interchangeable. Exclusive high grip rubber compound sole to grant durability, superior grip and perfect feeling while riding. The sole is replaceable. Reinforced toe cap. Made in Italy.