Description
The Alpinestars SM3 Radium Helmet is engineered for MX, Enduro, and Offroad riders seeking a premium blend of protection, comfort, and performance. Featuring a thermo-injected shell constructed from a polymer blend with varied thickness for impact protection and lightweight feel, this helmet also incorporates a composite fiber inner shell between the outer shell and EPS liner for enhanced safety. The multi-density 6-piece EPS liner absorbs impacts efficiently, while a polished inner liner with a low-friction coating helps manage rotational forces. Designed for optimal airflow, the helmet boasts ten intake and seven exhaust ports, plus a visor engineered to direct air into the vents. The Emergency Release System and removable cheek pads allow safe helmet removal in emergencies. Additional features include hydration tube channels, a soft 25 mm textile chin strap, stainless steel D-rings, and a comfort liner made from recycled materials for a lower carbon footprint. Certified to both DOT and ECE 22.06 standards.
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