Alpinestars SM3 Heat Helmet — Size S, Matte Silver

Designed for demanding riding, this model features innovations and technologies optimized for ease of use, comfort and impact performance.

The thermo-injected shell incorporates a special polymer blend with varying thicknesses to deliver an optimal balance of impact protection and low weight.

A patented low-friction coating on the inner EPS liner reduces rotational acceleration from oblique impacts by creating a slip plane similar to natural cerebrospinal fluid.

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

Ventilation is maximized with 10 inlets and 7 exhaust ports to promote efficient heat transfer and consistent airflow.

Composition: 48% acrylonitrile-butadiene-styren, 20% polyurethane, 16% polystyrene (EPS), 6% polypropylene, 4% polyvinyl chloride, 2% ethylene-vinyl acetate, 2% steel, 1% expanded polypropylene, 1% polyamide.