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: Flexible accordion microfiber stretch at Achilles allows natural movement. Innovative, full length medial-facing microfiber panel features new texture pattern offering excellent grip and feel against the bike and protects from abrasion and heat. Flexible, lightweight toe shifter allows feel for changing gears. Separate internal bio-mechanical ankle brace works with the outer structure of the boot to form a protective system allowing full and free movement of the foot, ankle, and leg. External entry has stretch accordion panel for a close fit and ease of entrance and removal. New, soft TPU stretch panel on the lateral side gives easy closure with an 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 and secure. Shin plate features new micro-adjustable ratchet top closure for safe and precise fit.