Alpinestars unique, specifically developed, replaceable, three-pieces Supermoto outer sole. Fixed, one-piece, main area for rigidity and structural strenght. Replaceable heel and front outer foot sections for sliding and wear resistance fit absolutely flush with the fixed sole to create a smooth, uninterrupted surface. The replaceable heel and toe sections are formed with a specially developed rubber compound and are affixed to the boot with mechanical grip tabs and steel screws with a washer screw head protection to ensure the screws and assembly are nog damaged by wear and impacts. Full-grain leather with impact and abrasion resistant PU shell for unmatched levels of safety. Closure system features 4 aluminium buckles with memory settings and a quick release/locking system with self-aligning design for easy, precise closure. TPU protects toes, foot, ankle and lower leg from serious impacts. Contoured calf protector plate is injected with PU for high impact protection. Toe box area utilizes a unique dual injection process which offers greater flexibility and comfort. TPU ruber gaiter at the top of the boot effectively seals out elements. Dual compound to-box for improved flexibility and increased impact protection. Inner sid of the boot specifically designed with duel compound PU for improved grip. Achilles flex zones for superior comfort, control and support. A vented version is also available for summer riding/racing. The Tech 7 Supermoto boot is CE certified.