The S-M3 helmet is engineered for MX, enduro and off-road use, featuring innovations and technologies optimized for ease of use, comfort and impact performance. 🏁
Shell construction uses a thermo-injected shell with a special polymer blend and varying thicknesses to deliver the ideal combination of impact protection and light weight.
Alpinestars' patented low-friction coating is applied to the inner area of the main EPS liner to reduce rotational acceleration forces from certain oblique impacts.
This slip-plane layer mimics the brain's low-friction cerebrospinal fluid, the body's natural defense against oblique impacts.
The patented visor release system ensures visor release at a predetermined force, effectively reducing loads on the neck during an impact.
Ventilation is maximized with high heat-transfer efficiency thanks to 10 inlets and 7 exhaust ports.
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. ✨
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