Product Description Wide opening for comfort and allows wide adjustment of calf fit and support. The TPU medial side panel features an advanced honeycomb rubber insert and is designed for superior grip on the bike while protecting against shocks. Innovative buckle closure system including high-impact aluminum bridge ties, with memory parameters and quick locking system with self-aligning design for easy and precise closure and better driving performance. All loops are interchangeable. The contoured calf protective plate is injected with a high-modulus polymer for impact resistance and features a blade flex system designed by Alpinestars for more accurate control and movement, increased heel and Achilles tendon protection, and prevents hyperflexion. The TPU ankle protection system has a biomechanical connection between the middle part and the lower part of the boot to prevent damage to the leg by providing progressive relief of force for torsion forces. Redesigned instep and flexible accordion construction for superior comfort, control and support. Featuring an innovative one-piece double composite injected sole with injected protection and integrated steel upper. The shell is highly resistant to abrasion and impact, contributes to the overall durability of the shoe and improves fluidity. The extended microfiber gaiter prevents excessive ingress of water and dirt. 3D lining inside with non-slip microfiber suede at heel to keep foot in place. Soft foam reinforcement at ankles and collar for durable comfort and shock absorption. Removable double anatomical sole composed with EVA and Lycra upper for comfort and support ensures even weight distribution and a reinforced heel. Legal Disclaimer This item complies with US Federal Motor Vehicle Safety Standard 218 (FMVSS 218) (DOT FMVSS No. 218 Certified)
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