ALPINESTARS SMX1-R V2 Boots - Black/White - US 6 / EU 39 2224021-12-39 Tech 5 Boots separation at the critical point

separation at the critical point of loading reduces potentially damaging leverage and rotational accelerations that refer injury to the rider’s neck and spine

Does not include mufflers

ensuring in most cases to also have a saving in terms of weight

Pre-curved sleeves improve comfort and reduce fatigue

000 pounds of tension without stretching or breaking

ALPINESTARS SMX1-R V2 Boots - Black/White - US 6 / EU 39 2224021-12-39 Tech 5 Boots separation at the critical pointThe 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