ALPINESTARS SMX-S Boots - Black - US 9.5 / EU 44 2223517-1100-44 Regulator/Rectifiers Chassis is constructed with synthetic

Chassis is constructed with synthetic leather that is flexible and abrasion resistant

Made from 6061-T6 aluminum for the strength to stand up to punishing terrain

Full premium leather main and mesh chassis construction

Over the boot design with zipper leg opening

Internal hook and loop grip closure fixings plus cable conduits in order to seamlessly accommodate airbag system

ALPINESTARS SMX-S Boots - Black - US 9.5 / EU 44 2223517-1100-44 Regulator/Rectifiers Chassis is constructed with syntheticDurable 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