Alpinestars Youth SM3 Radium Helmet — Size L, Matte Yellow

Engineered and profiled specifically for younger riders, this helmet is optimized for motocross, enduro and off-road use.

The thermo-injected outer shell combines a specialized polymer blend with variable wall thickness to maximize impact protection while minimizing weight.

A multi-density inner liner positions the correct foam density where it matters to enhance impact absorption and reduce overall mass.

An internal low-friction coating on the main EPS liner acts as a slip plane to help reduce rotational acceleration from oblique impacts.

A patented visor release system reduces forces on the rider's neck by releasing the visor under controlled load during an impact.

Comfort features include removable crown and cheek pads in multiple thicknesses for a tailored fit, integrated hydration tube channels and a soft 25mm chin strap with stainless steel D-rings.

Ventilation is maximized through multiple inlets and exhaust ports, with the visor designed to direct airflow into the channels for efficient heat transfer.

The helmet incorporates an emergency cheek pad release system and contoured foams to support safe removal and on-head comfort.

Sustainable textiles are used for the comfort liner to help reduce overall carbon footprint.