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The Alpinestars Youth SM3 Helmet Radium offers advanced impact protection combined with lightweight comfort, making it ideal for young riders. Its thermo-injected shell features a specialized polymer blend with varying thicknesses, engineered to deliver optimal impact absorption while remaining lightweight. The impact-resistant thermoplastic outer shell enhances durability and provides a secure fit for active youth riders.
The helmet's fit can be personalized through adjustable crown and cheek pads, available in different thicknesses to accommodate individual head shapes and sizes. This customization ensures a snug and secure fit, reducing movement during rides and improving overall safety. The multi-density inner liner is designed to absorb impact effectively, with specific areas reinforced for enhanced protection while helping to keep the helmet lightweight.
Both the inner and outer surfaces are engineered to minimize damage from oblique impacts, and a low friction coating inside the EPS liner acts as a slip plane to reduce rotational forces during certain impacts. This feature mimics the brain’s natural cerebrospinal fluid, offering additional protection against rotational injuries. The helmet's ventilation system includes ten intake vents and seven exhaust ports, providing maximized airflow and heat transfer for a cooler, more comfortable ride. The visor is designed to channel airflow into these ports, further enhancing cooling performance.
Safety features include a visor release system calibrated to release with a specific force to reduce neck strain during impacts, and an Emergency Release System with removable cheek pads for quick and safe removal of the helmet if needed. The interior features 3D contoured foam and a comfort liner made from recycled materials, promoting sustainability without sacrificing comfort. Hydration tube channels integrated into the cheek pads allow riders to stay hydrated easily without interrupting their ride. The soft 25 mm textile chin strap ensures a secure fit, while stainless steel D-rings provide reliable fastening. Overall, the Alpinestars Youth SM3 Helmet Radium combines advanced safety technology, comfort, and ventilation, making it a top choice for young riders seeking reliable protection and performance.
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