The Alpinestars SMX-S motorcycle boots deliver dependable protection, comfort, and precise fit for street and sport riding. This black riding boot features a durable microfiber upper that combines flexibility with abrasion resistance, while the ergonomic last provides a secure, performance-focused fit. The US 5 / EU 38 size is designed for riders seeking a supportive boot with advanced protective construction for everyday road use and spirited riding.
Protection: Double-injected polyurethane shields help protect the shin, ankle, calf, toe, and heel from impact while reducing abrasion exposure. Additional inner protection is provided by a double-injected panel connected to the heel counter and positioned beneath the outer shell along the outer ankle. The interchangeable bi-injected polyurethane toe slider uses a convenient snap-in assembly for straightforward replacement.
Comfort and Fit: A quick-drying polyamide lining is laminated with open-cell foam and contoured high-density padding to help absorb shocks and improve foot comfort. The MTP mesh liner and anatomical removable polyurethane foam footbed promote breathability and cushioning. A medial side-entry closure combines an elastic-mounted zipper with an extra-wide hook-and-loop flap for a secure fit and easy access, while the wide instep and Achilles flex bellows support natural movement.
Performance Construction: Alpinestars’ exclusive rubber compound sole includes structured shank reinforcement to support the arch area. Air vents at the ankle, heel, and forefoot are covered with purpose-designed mesh to improve airflow. The Alpinestars SMX-S Boots are supplied in black, model SMX-S, with manufacturer and vendor part number 2223517-1100-38, and are sized US 5 / EU 38 for compatible motorcycle riding applications.
Features:
- Size: US 5 / EU 38
- Model: SMX-S
- Brand: Alpinestars
- Color: Black
- Manufacturer part number: 2223517-1100-38
- Vendor part number: 2223517-1100-38
- Upper: Durable, flexible high-tech microfiber construction
- Protection: Double-injected polyurethane shields for the shin, ankle, calf, toe, and heel
- Toe slider: Interchangeable bi-injected polyurethane design with snap-in assembly
- Lining: Quick-drying polyamide with open-cell foam and contoured high-density padding
- Sole: Exclusive rubber compound with structured shank reinforcement
- Ventilation: Mesh-covered air vents at the ankle, heel, and forefoot
- Closure: Medial side-entry zipper with an extra-wide hook-and-loop flap
- Footbed: Anatomical, removable polyurethane foam footbed
- Fit: Ergonomic last with flexible instep and Achilles bellows