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The Alpinestars SM3 Radium Helmet is engineered for high-performance motocross, enduro, and offroad riding, offering an optimal blend of protection, lightweight design, and rider comfort. Its thermo-injected shell features a polymer blend with varied thicknesses, providing impact resistance while minimizing weight, making it suitable for demanding offroad environments. The impact-resistant outer shell is constructed from durable thermoplastic, while the inner shell incorporates a composite fiber layer positioned between the outer shell and EPS liner, enhancing impact absorption and protection during crashes. The helmet's fit can be precisely tailored to the rider's head with adjustable crown and cheek pads, ensuring a secure and comfortable fit for extended riding sessions. The multi-density inner liner, with five different densities, optimizes impact management in critical areas, reducing the risk of injury without adding unnecessary weight. The 6-piece EPS liner system is designed for maximum performance, with a polished, low-friction coating that minimizes rotational forces during oblique impacts, thereby protecting the rider's brain from rotational acceleration injuries. Ventilation is prioritized with ten inlet ports and seven exhaust outlets, facilitating high airflow and heat transfer, while the visor directs air into the vents to enhance cooling. The visor release system is engineered to release with a controlled force, reducing strain on the rider's neck during impacts. Constructed using recycled materials, the comfort liner promotes environmentally conscious manufacturing without compromising performance. Integrated hydration channels within the cheek pads allow for easy hydration during rides, improving rider endurance. The soft 25 mm textile chin strap provides a secure fit, complemented by stainless steel D-rings for added safety. Safety features include an emergency release system and removable cheek pads, enabling quick and safe helmet removal if necessary. The chin area is specifically designed for superior impact performance, and the helmet's overall construction ensures maximum protection, comfort, and ventilation suitable for aggressive offroad riding. Weighing approximately 84 ounces, the Alpinestars SM3 Radium Helmet is a reliable choice for riders seeking advanced safety features and enhanced riding experience.
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