Updates have made the S-MX R an even more accomplished road and track performer. -- Greater flexibility and comfort, combined with its lightweight and ergonomic shaping using hi-tech micro-fiber, give superb riding control and safety performance. -- Contoured shin plate protection, with high modulus TPU injection has been re-profiled to improve forward flex performance whilst providing highly effective impact and abrasion protection. -- Air scoops are upgraded and give effective ventilation. -- Ankle and calf protection is dual molded to improve material hardness and contoured to allow the Achilles flex bellows to wrap around the ankle. -- Additional calf support is given by a molded logo tab behind the gusset. -- Injection molded, support gasket has been added to control support and stiffness in the ankle area. -- Wide and ventilated injected TPU heel counter structure is combined with an internal shock absorbing padded insert and memory foam ankle guard. -- Inside lower heel grip, with a smooth inner profile, gives good feel and control. -- Asymmetrical ‘throat’ design bellows area has been profiled to flow over the medial side forefoot to aid flex and promote natural movement. -- Shifter pad and forefoot protection has been enlarged and uniquely styled with over-injected TPU inserts. -- Side entry zipper and expansion panel allow easy entry and exit with wide opening aperture and improved general fit. -- Micro adjustable, replaceable, ratchet closure, with recessed locking buckle and hidden strap around the calf, provides additional accuracy and security, in addition to the Velcro© flap closure over the entry/exit zip. -- Synthetic inner lining in open cell foam for comfort and long-lasting freshness. -- Highly breathable lining in the ankle and forefoot areas. -- Interchangeable, bi-injected, toe slider. -- A removable and replaceable contoured footbed, sculptured with Alpinestars exclusive PU foam, provides improved arch support and increased forefoot pedal feel. -- Exclusive rubber compound sole is highly durable and gives superb grip on the footpegs and a high level of pedal feel. -- Internal molded shank. -- A fully perforated version of the S-MX R provides higher levels of ventilation for hot climates (available in Black only). -- A Gore-Tex® version is also available for ultimate weather protection with a waterproof and breathable membrane. -- The S-MX R boot is CE certified.
