Clean and contemporary design lines, advanced anatomic profiling and excellent comfort features set the lightweight, CE certified S-MX 3 Boot apart. Conceived by Alpinestars’ performance footwear department to incorporate an innovative buckle closure system and class-leading protection, the S-MX 3 offers critical performance edge on road or track. FOCUS ON INNOVATION: The S-MX 3 boot incorporates a new performance riding buckle attachment system which makes for a lighter, ergonomic boot that securely fastens across the instep via a single pump-ratchet micro closure buckle. This improves all-round fit tuning and makes for a significantly more streamlined boot which promotes better contact with the bike. S-MX 3 BOOT KEY FEATURES: Advanced lightweight microfiber main upper for durability and repeated abrasion resistance. Instep and Achilles accordion flex zones for superior comfort, extension, control and support. Double density ankle protector on medial side layered under the upper offers protective performance and abrasion resistance in key area. External, high modulus TPU heel counter, lateral ankle and shift pad for improved shock protection and durability. Shin plate reinforced with hot melt for additional protection against knocks and weight-saving. Integrated, replaceable bi-injected TPU forefoot slider features new easy-screw fixing concept for quicker and easier replacement. Combination elastic-mounted medial zipper with additional, wide aperture Velcro® closure flap on medial side, offers extra protection against the bike. Internal toe box protection is layered under the upper for durability, improved feel and performance. Alpinestars new buckle closure system offers a rapid and secure fit over the instep area and improved foot support while permitting excellent levels of flex control. CPS’s ergonomic buckle is attached to a durable dual density TPU mounting and is constructed from a technical compound aluminum for greater abrasion resistance. Alpinestars buckle and ratchet strap is replaceable. CPS system forms a biomechanical link between lateral top calf/shin and ankle offers improved structural integrity, protection against impact shocks, abrasion resistance and flex support. Ergonomic new boot shaping for forefoot streamlining which enables greater control of the bike’s controls and for superior, wide-ranging foot profile, fit and comfort. Internal high modulus polyamide midsole with integrated shank reinforcement for structure and support to the arch area. Alpinestars’ exclusive compound rubber sole promotes improved feel and grip, water dispersion and durability. Breathable textile interior lining features anti-sliding suede reinforcement on heel area help keep foot in position while riding. Internal padding for 360° comfort and fit around the ankle. Removable anatomic foot-bed includes EVA foam and Lycra® for convenience, comfort and support. The S-MX 3 boot is CE certified.