Alpinestars SMX-S Boots (Black/White) Size US 5 / EU 38 backpack and more stable ride

and more stable ride

Micro adjustable ratchet closure on top of boot for an optimized fit

Neoprene wrist cuff plus velcro and TPR closure for secure and personalized closure

Its Adaptive Impact System (AIS) whose high-performance ecosystem of structural designs and energy mitigating materials — including RHEON

like a quick-dry mesh interior waistband and second layer of reinforced fabric covering the saddle area to prevent mud from creeping in at the saddle area

Alpinestars SMX-S Boots (Black/White) Size US 5 / EU 38 backpack and more stable rideDurable microfiber upper construction that has superb flexibility and a comfortable feel Ergonomic new forefront boot shape is streamlined to better control and feel of the motorcycle controls Thermoplastic Polyurethane (TPU) shin plate protector is race developed for superior impact and abrasion resistance Lateral Thermoplastic Rubbery (TPR) injected ankle support construction provides superior comfort and impact resistance TPU double density ankle