Alpinestars SM3 Heat Helmet — M, Yellow

SM3 Heat Helmet is engineered for MX, enduro and off‑road use, with innovations focused on ease of use, comfort and impact performance.

The thermo‑injected shell uses a special polymer blend with varying thicknesses to balance impact protection and lightweight design.

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

The helmet features a patented visor release system that releases the visor at a predetermined force, helping to reduce neck loads during an impact.

Ventilation is maximized through 10 inlets and 7 exhaust ports to promote high levels of heat transfer and airflow.

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