Alpinestars SM-1 R V2 Motorcycle Shoes Class-leading low-cut riding boot The SM-1 R v2 riding shoe includes many technical innovations to enhance comfort levels fit and durability. Features: Key Features Upper made from advanced microfiber providing comfort durability and excellent abrasion resistance. Innovative heel support system , which works in combination with a belt clasp Provides improved fit and support as well as structural integrity. The back of the heel counter is designed with a soft TPR insert , which seamlessly interacts with the rear flex area providing greater ankle freedom of movement and comfort when handling the bike. The rear flexible boot is equipped with a flexible window which also acts as an air intake for efficient ventilation. and air flow. New ergonomic TPU lining for increased durability in critical areas. Ergonomic boot shape for a streamlined forefoot providing fit and comfort across a wide range of foot profiles. Improved buckle strap is anatomically curved repeating the natural shape of the instep. Velcro front closure system provides a quick and secure fit in the instep area while providing an excellent level of flexibility The pouch is equipped with a TPR puller for ease of use. Aramid fiber ensures durability the thinness and light weight of the new belt fastener system. Alpinestars exclusive compound rubber outsole with grip pattern providing better feel and grip drainage and durability. The outsole features an integrated Alpinestars TPF (Transverse Protection Frame) to protect against possible lateral loads. The instep and Achilles flexion zones are made of lightweight microfiber. for optimal levels of durability comfort and agility on and off the bike. Heat-welded flex grooves to control shoe flex and flex; rise medial part and posterior part. Zip closure at the back allows for easy entry and exit. Double-density ankle protection on both sides located under the upper Provides protection and abrasion resistance in a key area. Integrated replaceable TPU sliders with dual forefoot injection New lightweight screw fastening concept for faster and easier replacement. External high modulus TPU heel counter Lateral ankle and shift pad for enhanced impact protection and durability. Internal toe protection located under the upper for durability Improved feel and performance. . Removable anatomical EVA foam and Lycra footbed for comfort and support. Internal mesh lining for cooling and moisture management. Safety footwear for motorcyclists (EN 13634:2017).