ALPINESTARS SMX1-R V2 Boots - Black/Red - US 9 / EU 43 2224021-13-43 Torque Spacer Kit This system features mandrel bent

This system features mandrel bent stainless steel tubing

Pre-curved design for optimal accommodate hump and shoulder cups

Chest and back compartments are designed to accommodate the Alpinestars Nucleon chest and back inserts

Machined-aluminum flanged insert

Impact Protectors are fully removable for washing

ALPINESTARS SMX1-R V2 Boots - Black/Red - US 9 / EU 43 2224021-13-43 Torque Spacer Kit This system features mandrel bentThe 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