Alpinestars most iconic riding boot, worn by a roster of champions past and present, the Supertech R has undergone a series of evolutions to significantly ramp up its performance features even further. Innovations for 2015 include a newly redesigned compound rubber sole, an update to the ergonomically profiled shinplate and a redesigned front flex area - all of which enhancing the podium winning performance of this CE certified boot. Key Features Main upper material constructed using microfiber for optimum abrasion resistance, while also delivering high levels of flexibility New front flex area for improved impact abrasion while also ensuring the natural front and back New front flex area increases ventilation and airflow for additional breathability Redesigned rear bellow in stretch microfiber for improved natural front and back movement Redesigned top gaiter in microfiber material with TPU over injection for enhanced prehensility New synthetic microfiber panel on medial side for enhanced abrasion resistance and improved feeling when in contact with the bike Construction New TPU stretch panel design with zip for an easier entry and exit and a closer, more optimized fit Hook and loop closure secures the puller zip remains in position Micro adjustable ratchet closure on top of boot for an optimized fit New replaceable heel plate slider design offers increased sliding performance and protection in the case of crash Sole constructed using a lightweight rubber compound for excellent grip on the pegs Separate, internally updated bio-mechanical inner bootie made by 3D mesh material for greater structure, thus improving rider comfort Protection According to European statutory law the CE mark is a conformity requirement for the marketing of this product. The following standards apply: CE EN13634:2017 Inner bootie is equipped with a new external toe area with a soft TPU reinforcement for superior impact protection and additional ankle padding for greater protection, stability and cushioning during natural movement of the foot Replaceable co-injected TPU/aluminum toe slider with an easy screw system that protects the toe area against abrasion resistance New TPU shifter for increased protection on lower medial side New TPU shin plate has been redesigned for greater impact absorption performance, thus improving abrasion resistance in a key area New replaceable shin slider for additional abrasion resistance