Alpinestars Youth SM3 Jettson Helmet — Youth L, MX, Gray

The S-M3 helmet is engineered for MX, Enduro and off‑road use, featuring innovations and technologies optimized for ease of use, comfort and impact performance.

Shell construction features a thermo-injected shell with a special polymer blend and variable thickness, engineered to deliver an optimal balance of impact protection and light weight.

A patented low-friction coating is applied to the inner part of the main EPS liner to reduce rotational acceleration forces from certain oblique impacts.

This slip-plane layer mimics the brain's low-friction cerebrospinal fluid, the body's natural defense against oblique impacts.

A patented visor release system ensures the visor releases at a predetermined force to reduce neck forces during an impact.

Maximized ventilation and efficient heat exchange are provided by 10 inlet vents and 7 exhaust ports, keeping riders cooler on long runs.