ALPINESTARS SMX1-R V2 Boots - Black/White - US 10.5 / EU 45 2224021-12-45 Tech 5 Boots The Bionic Tech 2 is

The Bionic Tech 2 is constructed from an advanced high-performance fiber polymer compound Complete design facelift and technical upgrade including new lightweight rear and chest padding and updated chinplate design

Integrated Polyethylene (PE) foam padding on the chest

and seal already pressed in and ready to install

Lightweight polyester water resistant material

ALPINESTARS SMX1-R V2 Boots - Black/White - US 10.5 / EU 45 2224021-12-45 Tech 5 Boots The Bionic Tech 2 isThe 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