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The Alpinestars SM3 Youth Radium Helmet is specially designed for young riders involved in motocross, enduro, and off-road activities, offering a tailored fit and advanced safety features. Constructed with a thermo-injected shell made from a specialized impact-resistant thermoplastic, this helmet provides a lightweight yet durable protection solution. The shell's varying thickness ensures optimal impact absorption while maintaining minimal weight, with the Youth Small version weighing approximately 2.4 pounds (1060 grams) and the larger sizes slightly heavier. Separate shells for DOT and ECE standards include a composite fiber layer in the DOT version, enhancing impact resistance and rider safety. The helmet's fit can be customized through adjustable crown and cheek pads, allowing for a secure and comfortable fit as the rider grows, especially for those in the Youth Medium and Large sizes sharing the same EPS size. For smaller riders, the Youth Small offers tailored sizing suitable for children aged 3 to 4 years. The helmet features multiple density inner liners, strategically designed to absorb impact forces effectively and reduce rotational acceleration through a patented low friction coating that mimics cerebrospinal fluid, minimizing oblique impact risks. The visor release system is engineered to detach with a pre-determined force, reducing neck strain during impacts. Additionally, the helmet incorporates a comfort liner made from recycled materials, supporting sustainability efforts. Integrated hydration tube channels in the cheek pads enhance convenience during rides, while maximum ventilation is achieved through a system of 10 inlet vents and seven exhaust ports, directing airflow efficiently for optimal heat transfer. The SM3 Youth helmet complies with both DOT and ECE 2206 standards, ensuring worldwide usability and safety. Features such as the Emergency Release System, removable cheek pads, and stainless steel D-rings add to its safety and ease of use, making it an ideal choice for young off-road enthusiasts seeking protection, comfort, and performance in a lightweight package.
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