SMX+ Vented Boots - Black - US 12.5 / EU 48 - The SMX Plus v2 Boot perfectly blends sleek sports styling with advanced protection features developed in Alpinestars performance footwear department. The durable and light microfiber upper is reinforced with a rugged polymer protector and the exclusive Multi-Link Control (MLC) system prevents ankle torsion while offering freedom of movement. - Advanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility - Front flex area is constructed with a soft microfiber for improving abrasion resistance and natural forwards and backwards movement - Flexible accordion microfiber on Achilles gives enhanced natural movement - Strategically positioned ventilation area in heel and shin TPU for breathability and airflow - Outside entry/exit has stretchable accordion panel for a close fit and ease of entry and removal. Contoured high modulus shin plate protector gives superior impact and abrasion resistance - An evolution of Alpinestars unique Multi-Link Control system provides advanced external protection and support for ankle articulation, limiting hyper-torsion, hyper-extension and hyper-flexion as well as providing Achilles and ankle impact protection - Wide heel counter with lateral ventilation extends to the ankle and is combined with a shock absorbing padded insert and self-molding ankle protectors - Dual density TPU replaceable toe slider with screw-in assembly providing protective coverage around the outer toe area - Replaceable heel slider and external side heel slider are positioned to dissipate and absorb shock and promote sliding during an accident - Large front and rear asymmetrical accordion zones are optimized to maximize flexibility for maximum comfort and improved safety - Micro adjustable ratchet top closure stows tab end - Advanced synthetic forefoot lining, laminated with open cell foam for shock absorption and highly breathable lining in ankle and leg areas for comfort - Alpinestars anatomical and replaceable countered EVA footbed provides arch support and forefoot pedal feeling - Durable sole, designed for improved riding feel, features evenly textured rubber for consistent grip - Inner instep speed lacing closure and unique lateral zipper offer precise and secure fit - Alpinestars Lace-Lock System is constructed from an advanced polymer resin to provide a quick, precise and secure closure - Hook and loop tap locks the zip pull close, keeping in flat and safe