The main upper material is microfiber.
Front and rear accordions made by lightweight microfiber that offer superior comfort.
External TPU protection on the outer ankle and heel counter from impact while abrasion.
Medial side is protected by an inner TPU ankle disk double density.
High modulus TPU injected: shift pad, Heel counter, Medial strap and Lateral Ankle Buckle holder.
New integrated replaceable bi-injected TPU slider with a new screw fixing concept.
Combination medial zipper and velcro on medial side and additional closure adjust by velcro in the Lateral top collar.
Instep closure system made by slim buckle with aluminum arm with micro closure regulation.
Internal toe box reinforcement layered under the microfiber.
Breathable textile lining with anti-sliding microfiber suede on the heel.
Removable anatomic EVA foam footbed.
Alpinestars exclusive vulcanized rubber compound sole.
SMX-3 boot is CE certified to EN 13634: 2010.