ALPINESTARS SMX1-R V2 Boots - Black/White - US 5 / EU 38 2224021-12-38 Grip Donuts insole and Achilles area for

insole and Achilles area for comfort and durability

Injected TPU shin plate connected with the TPU medial protector panel

Great sound and increased performance

Precision-ground A-arm shaft manufactured from 52100 heat-treated bearing steel for improved performance and extended life

ALPINESTARS SMX1-R V2 Boots - Black/White - US 5 / EU 38 2224021-12-38 Grip Donuts insole and Achilles area forThe main upper material is microfiber Tongue and rear accordion made by lightweight padded material that offer superior comfort Airflow and ventilation are improved thanks to lateral Air Intake with metallic mesh New speed lace system derived from Alpinestars MotoGP technology for improved quick precise and secure closure Higher closure system with new adjustable hook and loop closure and debossed Alpinestars logo Foam backed double density ankles