Main upper portion is constructed from technical synthetic material, incorporating a durable perforated microfiber/mesh front accordion flex zone with an extended flex area on the rear for improved Achilles calf coverage Lining around the ankle and toe box constructed from 3D mesh for additional breathability 100 percent waterproof membrane layered between upper and lining for proven performance in difficult weather conditions Highly comfortable and durable technical textile collar lining Removable anatomic footbed features EVA (Ethylene Vinyl Acetate) foam and textile for support and comfort Dual density ankle protectors are backed with foam inner padding for protection and padding on both sides Internal toe box and heel counter protection is layered under the upper for durability, improved feel and performance Comfort padding envelopes ankle area for fit and comfort Innovative weight saving laminated technology utilized on shin plate for weight saving and additional protection against impacts Boot shaping gives greater comfort and incorporates ergonomic toe box construction for improved compatibility with bikes controls Internal heel counter and toe box give boot enhanced structural integrity Contoured, high modulus midsole follows shape of foot and incorporates a structured shank reinforcement Three adjustable Velcro straps ensure secure closure and highly personalized fit. Straps feature TPR (Thermoplastic Rubber) pull tabs for ease of closure and durability Alpinestars exclusive vulcanized compound sole with unique side wrapping design Rear reflective insert for improved visibility
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