Alpinestars SM3 Radium Helmet Gloss Black/Red Fluo/White Medium

Description

The Alpinestars SM3 Radium Helmet in Gloss Black/Red Fluo/White (Medium) delivers optimized protection, comfort, and performance for MX, Enduro, and Offroad riders. Its thermo-injected shell incorporates a polymer blend with varied thickness for a balance of impact protection and light weight. The composite fiber inner shell, multi-density EPS liner, and low-friction inner coatings minimize impact and rotational forces. Features include emergency release cheek pads, a 25mm soft textile chin strap, stainless steel D-rings, advanced ventilation with 10 inlets and 7 exhaust ports, and a visor designed for optimal airflow. The comfort liner is made from recycled materials, and hydration tube channels are integrated for convenience. Certified to DOT and ECE 22.06 standards.