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 microfiber, 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 foot bed, 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

Alpinestars Stella SMX-1R Black & Fuchsia