Anatomically engineered and profiled specifically for youth and younger riders, the all-new SM3 Youth is optimized for MX, Enduro and Off-road use, and features a whole raft of technologies and innovations taken from Alpinestars range of adult helmets to deliver the optimal blend of performance, protection and comfort. This lightweight helmet features a thermo-injected shell incorporating a special polymer blend enhanced by varying degrees of thickness that is engineered to deliver the optimal combination of impact protection and light weight. Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in three sizes (Youth Small, Youth Medium and Youth Large. The SM3 Youth weighs 1060g (ECE) and 1170g (DOT). Separate versions of the shells for DOT and ECE requirements; the DOT certified version of the helmet*s inner shell is constructed with a composite fiber assembled between the outer shell and the EPS liner for maximum protection against impacts. The fit can be tailored to the rider*s head thanks to the helmet*s crown and cheek pads, which are available as genuine spare parts in different thicknesses. Youth Medium and Youth Large sizes share the same EPS size, which allows riders with an YM size to initially buy an YM helmet and then configure it to a Youth Large size as they grow via the crown and cheek pad spare parts. The Youth Small has a smaller EPS size and can be customized only via the cheek pads. Alpinestars extensive research has shown that the kids that wear a YS size are very small, typically 3 to 4 years old, and therefore they require a dedicated helmet fit. Multiple density inner liner ensures the helmet is equipped with the correct density in the correct area for enhanced impact absorption, while also helping reduce overall weight. The inner and outer surfaces are engineered to minimize the effects of oblique impacts. Alpinestars patented low friction coating is applied to the inner part of the main EPS liner to reduce the rotational acceleration forces that can result from certain oblique impacts. This layer essentially acts as a slip plane to mimic the brain*s own low friction cerebrospinal fluid, which is the body*s natural defense against oblique impacts. Patented visor release system ensures the visor is released with the correct pre-determined amount of force, effectively reducing the forces on the rider*s neck during an impact. Comfort liner is constructed using recycled materials for a lower carbon footprint. Hydration tube channels are integrated into the helmet*s cheek pads for convenience and performance.
The Alpinestars SM3 Youth Radium Helmet is specifically designed for young riders, offering a perfect blend of performance, protection, and comfort. Engineered with a lightweight thermo-injected shell made from a unique polymer blend, this helmet ensures optimal impact protection while remaining easy to wear. The SM3 features a variety of advanced technologies borrowed from Alpinestars' adult helmets, making it an ideal choice for motocross, enduro, and off-road adventures.

This helmet comes equipped with a patented low friction coating on the inner EPS liner to help reduce rotational forces during oblique impacts, enhancing rider safety. The unique visor release system allows for controlled release during impacts, further protecting the rider's neck. Additionally, with customizable fit options through interchangeable crown and cheek pads, the SM3 adapts as your young rider grows, ensuring long-lasting comfort and safety on every ride.

Features:
* Anatomically engineered and profiled for youth and younger riders.
* Lightweight outer shell made from advanced impact-resistant thermoplastic.
* Multiple density inner liner for enhanced impact absorption.
* Patented low friction coating to reduce rotational acceleration forces.
* Emergency Release System for safe and easy removal of cheek pads.
* Maximized ventilation with 10 inlets and seven exhaust ports.
* Soft textile chin strap for optimal comfort and safety.
* Conforms to both DOT certification and ECE 2206 homologation.