Alpinestars SM3 Solid Helmet — Size M, Black matte
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Lightweight off-road helmet engineered for MX, enduro and off-road use. 🪖✨
Thermo-injected shell incorporates a special polymer blend with varying thickness to optimize impact protection while keeping weight low.
A patented low-friction coating is bonded to the inner EPS liner to reduce rotational acceleration during oblique impacts.
This slip-plane layer mimics the brain’s natural cerebrospinal fluid to help manage oblique impact forces.
Patented visor release system ensures the visor releases at a predetermined force to reduce neck loads in an impact.
Maximized ventilation with 10 inlets and 7 exhaust ports for high heat transfer and airflow.
Composite construction: 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.
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