BOOT STECH BK 40

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 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 Hook and loop tap locks the zip pull close, keeping in flat and safe Front flex area is constructed with a soft microfiber for improve abrasion resistance and natural forwards and backwards movement 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 Advanced microfiber upper construction for lightweight high performance protection and superb levels of flexibility Thermoplastic Polyurethane (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