Alpinestars SM3 Heat Helmet — XL, White

The SM3 Heat helmet is engineered for MX, Enduro and off-road use, featuring innovations optimized for ease of use, comfort and impact performance.

Thermo-injected shell construction uses a special polymer blend with varying degrees of thickness to deliver an optimal combination of impact protection and low weight.

A patented low-friction coating on the inner EPS liner reduces rotational acceleration forces from certain oblique impacts by acting as a slip plane that mimics the brain's cerebrospinal fluid.

The patented visor release system ensures visor release at a pre-determined force, effectively reducing forces on the neck during an impact.

Ventilation is maximized with 10 inlets and 7 exhaust ports to improve heat transfer and airflow, keeping riders cooler in demanding conditions.

Material composition includes 48% acrylonitrile-butadiene-styren, 20% polyurethane, 16% polystyrene (EPS), 6% polypropylene, 4% polyvinyl chloride, 2% ethylene-vinyl acetate, 2% steel, 1% expanded polypropylene and 1% polyamide for balanced protection and comfort.