Supertech R Boots - Black/Red - US 12 / EU 47 - Advanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility - Front flex area is constructed with a soft microfiber for improve abrasion resistance and natural forwards and backwards movement - TPU for breathability and airflow - Flexible accordion microfiber on Achilles gives enhanced natural movement - Strategically positioned ventilation area in heel and shin - 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 impact protection. - Dual density TPU replaceable toe slider with screw-in assembly provides protective coverage around the outer toe area - Wide heel counter with lateral ventilation extends to the ankle and is combined with a shock absorbing padded insert and self-molding ankle reinforcement - 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 - Advanced synthetic forefoot lining, laminated with open cell foam for shock absorption and highly breathable lining in ankle and leg areas for comfort - Micro adjustable ratchet top closure stows tab end - 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 - Alpinestars Lace-Lock System is constructed from an advanced polymer resin to guarantee a quick, precise and secure closure - Inner instep speed lacing closure and unique lateral zipper offer precise and secure fit - Hook and loop tap locks the zip pull close, keeping in flat and safe