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The Alpinestars Youth SM3 Helmet offers advanced protection and comfort designed specifically for young riders. Featuring a thermo-injected shell composed of a specialized polymer blend, this helmet balances impact resistance with lightweight performance. The shell's varying thickness enhances energy absorption while keeping the overall weight minimal, helping reduce rider fatigue during extended use. The helmet's outer shell is constructed from impact-resistant thermoplastic, providing durability and reliable protection in demanding riding conditions.
The fit can be customized for optimal comfort thanks to adjustable crown and cheek pads, which are available as spare parts in different thicknesses. This modular design ensures a secure fit tailored to each rider's head shape. A multiple density inner liner further improves impact absorption by distributing forces appropriately across different areas of the head, while also contributing to a lighter overall weight. The helmet's surfaces are engineered to minimize the effects of oblique impacts, and a low friction coating on the EPS liner acts as a slip plane to reduce rotational forces, mimicking the brain’s natural cerebrospinal fluid and enhancing impact safety.
Ventilation is a key feature of the SM3, with ten intake vents and seven exhaust ports that maximize airflow and heat transfer. The visor design channels air directly into these ports, providing increased cooling during rides. The visor release system is engineered to release with a predetermined force, reducing strain on the rider's neck during impact events. Comfort is further enhanced with a liner made from recycled materials, aligning with eco-friendly practices. Integrated hydration tube channels within the cheek pads offer convenience and performance benefits, especially during long rides.
Additional safety features include a soft textile chin strap measuring 25 mm for secure fit and comfort, an Emergency Release System with removable cheek pads for safe removal during emergencies, and 3D contoured foam for rider comfort. Stainless steel D-rings ensure a tight, secure fit, while the helmet's lightweight design—approximately 66.4 ounces—reduces neck fatigue. Overall, the Alpinestars Youth SM3 Helmet combines innovative safety features with rider-focused comfort and ventilation, making it a reliable choice for young motocross enthusiasts.
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