Alpinestars SMX-S Boots — Mid‑Calf, EU 39 / US 6, Black

Experience high-performance protection and all-day comfort with the SMX-S Boots. Designed with advanced protective elements inside and out, these boots blend ergonomic fit with breathable construction for confident riding.

• Durable microfiber upper for a comfortable, secure fit and high flexibility.
• Double-injected polyurethane (PU) shields protect the shin, ankle, calf, toe and heel while minimizing abrasion.
• Hidden inner protection panel connected to the heel counter provides added stability and impact resistance.
• Quick-drying polyamide lining laminated with open-cell foam and high-density contoured padding absorbs shocks to the foot area.
• Exclusive rubber compound sole with structured shank reinforcement offers arch support and optimized levels of support and performance.
• Interchangeable bi-injected PU toe slider with snap-in assembly for easy replacement.
• Innovative air vents at the ankle, heel and forefoot covered by engineered mesh for superior ventilation.
• Large instep profile, Achilles flex bellows and an ergonomic last ensure superior flex, fit and rider comfort.
• Removable anatomical PU foam footbed and MTP mesh liner keep the foot cool and comfortable.
• Medial side entry system with an elastic-mounted zipper and extra-wide Velcro® flap provides a precise fit and wide opening for easy access.

Constructed from a blend of microfiber, TPU, TPR and textile materials for durability and performance. Ready for daily riding and track use, the SMX-S balances protection, comfort and replaceable wear parts for long service life.