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Alpinestars all-new, purpose-built S-MX R Boot seamlessly blends classic Alpinestars racing performance, flexibility and protection with real world practicality, lightweight and comfort in a fully perforated version providing unprecedented air circulation. All things considered, the S-MX R is the ultimate performance/road riding that is every bit at home on the street as it is on the racetrack.

Features:

• A contoured shin plate protector is injected with high modulus PU for superior impact and abrasion resistance
• Streamlined air scoops increase ventilation
• U-shaped calf protector is impact resistant and shields both the ankle and calf area
• Additional adjustability and security is provided by the top recessed buckle structure
• Enhanced ventilation via lateral air scoops
• Injected PU flexible panel guards the internal Achilles tendon
• Interchangeable bi-injected PU toe slider with snap-in assembly
• Wide and ventilated injected PU heel counter is combined with an internal shock absorbing padded insert and self molding foam ankle guard
• Inside heel grip pad for additional feeling with the motorcycle
• New shift pad area over-injected with soft PU large instep flex zone for maximum comfort and flexibility
• Micro fiber upper
• Instep lateral zipper closure, in conjunction with a large flap leads to an easy entry and exit
• New internal user-friendly calf adjustment allows added comfort for larger calves
• Replaceable ratchet buckle closure on the calf features a hidden strap for added security
• Synthetic forefoot lining laminated with open cell foam
• Highly breathable lining on ankle and leg areas
• A replaceable contoured foot bed sculpted from Alpinestars PU foam provides enhanced arch support and increased forefoot pedal feeling
• The sole has been designed for improved feeling between the contact points of the rider’s feet and foot pegs
• European sizing scale