Alpinestars most iconic riding boot, worn by a roster of champions past & 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 & a redesigned front flex area – all of which enhancing the podium winning performance of this CE certified boot. Construction Durable & technical microfiber upper construction offering superb levels of flexibility. Microfiber main shell offers high levels of water-resistance, durability & enhanced weight-saving. Material ensures consistent fit for long term usage & is easy to maintain & clean. Redesigned front flex area constructed from over-injected TPU on breathable mesh with shaped reliefs. Newly designed external TPU shin protection is ergonomically shaped & wraps around to outer calf & is engineered to spread & dissipate impact energy across the surface while remaining compact. Shin plate features new micro-adjustable ratchet top closure for safe & precise fit. Innovative, full-length medial-facing microfiber panel features new texture patterning offering excellent grip & feel against the bike & protects from abrasion & heat. Lightweight rubber compound sole has been redesigned to offer excellent grip & feel. New, soft TPU stretch panel on lateral side gives easy closure with excellent fit. Zip is made from TPU to reduce friction in the event of a crash. Velcro tab locks the zip pull closed, keeping it flat & secure. Integrated replaceable co-injected TPU/ Aluminum toe slider features new easy screw fixing concept provides feel & protects the outer toe box structure from abrasion. Flexible accordion microfiber stretch at Achilles allows natural movement & support. Top gaiter follows leg contour & is made from flexible high-grade synthetic leather reinforced with PU. Flexible, lightweight toe shifter allows feel while changing gears. On vented version: strategically positioned ventilation in heel & shin TPU guides air through the boot. Separate internal bio-mechanical ankle brace works with the outer structure of the boot to form a protective system allowing full & free movement of the foot, ankle & leg. Replaceable polymer heel plate slider protects from impact & reduces friction in the event of a crash. External entry has stretch accordion panel for a close fit & ease of entrance & removal. The Supertech R boot is CE certified to EN