Alpinestars SMX-6 V3 Boots — US 9, Mid-Calf, Black

The SMX-6 V3 is packed with innovative safety and protective technology designed for track and high-performance street riding. Race-derived materials and engineering deliver protection, flexibility and a decisive performance edge when you push limits on two wheels.

• Advanced microfiber upper for lightweight abrasion resistance and superior flexibility.
• Front flex and back flexion zones use textile over-injected with soft TPU for impact abrasion protection while permitting natural fore-and-aft movement.
• Alpinestars unique ankle brace protection system offers biomechanical support between the lateral top calf, shin and ankle, limiting hyper-torsion, hyper-extension and hyper-flexion while providing Achilles and ankle impact protection.
• Lace-Lock System constructed from advanced polymer resin for a quick, precise and secure closure.
• TPU shifter zone on the lower medial side for enhanced protection.
• Race-derived TPU shin plate and dual-density TPU ankle protectors strategically positioned for impact and abrasion resistance.
• Replaceable dual-density TPU toe slider with screw-in assembly and replaceable heel and external side heel sliders for optimized shock dissipation and sliding performance.

Construction: 37% TPU, 35% microfiber, 11% polyester, 8% polyurethane, 8% TPR and 1% elastic. Inner lining: 82% polyester, 18% synthetic.

Designed for riders who demand track-level protection with street comfort and walkability — engineered to protect while allowing natural movement and control.