ALPINESTARS SMX-6 V2 racing boots Black / White / Grey, 43

a track and street performance riding boot which incorporates a newly designed upper for flexibility, the smx-6 v2 is superbly anatomically profiled, packed with innovative features and has the latest advancements in alpinestars´ performance footwear design and development. every component on the ce certified smx-6 v2 has been carefully designed to give riders a crucial performance edge in the form of protection innovations, improved ergonomics and comfort features key features: - ergonomic last for forefoot streamlining to enable greater control of the motorbike´s controls and for superior, wide-ranging foot profile, fit and comfort - air vents on the heel counter and shin plate plus breathable mesh inserts (vented version only) improve comfort and reduce fatigue on short and long rides - alpinestars´ new and exclusive compound rubber sole promotes improved feel and grip, water dispersion and durability - integrated, replaceable bi-injected tpu slider features new easy screw fixing concept for quicker and easier replacement - innovative instep and achilles accordion flex zone construction for superior comfort, extension, control and support - breathable textile interior lining features anti-sliding suede reinforcement on heel area help keep foot in position while riding - internal insole with the shank reinforcement integrated for support to the arch area and foot protection - double density ankle protector on medial side layered under the upper offers protective performance in key area - medial side entry opening/closure system features elastic-mounted zipper with wide velcro closure for flexibility and secure fit. the aperture opening is large to promote easier entry/exit - internal toe box protection is layered under the upper for durability, improved feel and performance construction: - newly designed boot upper incorporates innovative front, rear bellow and rear calf zones for superior levels of flexibility. the upper is constructed from microfiber for durability and abrasion resistance - new, removable anatomic foot bed includes eva and lycra for performance, comfort and support protection: - high modulus tpu injected shin guard, calf protector, heel counter, shift pad, ankle brace and toe slider for improved shock protection and durability - alpinestars´ innovative tpu lateral ankle brace protection provides a biomechanical support between lateral top calf/shin and ankle and offers improved structural integrity, protection against impact shocks, repeated abrasion resistance and flex support