Alpinestars SM3 Radium Helmet Matte Gray Black Yellow Fluo XL

Description

The Alpinestars SM3 Radium Helmet in Matte Gray/Black/Yellow Fluo (XL) delivers advanced performance, protection, and comfort for MX, Enduro, and Offroad riders. Its lightweight outer shell is constructed from impact-resistant thermoplastic and composite fiberglass, with a multi-density EPS liner for enhanced impact absorption. The helmet features a 6-piece EPS liner with three densities, maximizing impact protection while minimizing weight. Ventilation is optimized with ten intake and seven exhaust ports, while the visor directs air for improved airflow. The comfort liner, made from recycled materials, incorporates hydration tube channels for convenience. Safety features include an Emergency Release System and removable cheek pads, as well as stainless steel D-rings for a secure fit. Certified to both DOT and ECE 22.06 standards, the SM3 Radium is engineered for rotational impact management and rider comfort.