Alpinestars SM3 Solid Helmet — XL, White

This helmet is engineered for aggressive off‑highway and trail use, optimizing ease of use, comfort and impact performance. 🏁

Thermo-injected shell created from 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 during oblique impacts by providing a slip plane that mimics the brain’s natural cerebrospinal fluid protection.

Patented visor release system reduces forces on the neck by ensuring the visor releases at a controlled, predetermined force during an impact.

Maximized airflow through 10 inlets and 7 exhaust ports produces high heat transfer and consistent ventilation.

Materials: 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.