Alpinestars Motorcycle helmet SM3 Force

• The SM3 helmet is designed for MX, Enduro, and Off-road, incorporating innovations and technologies optimized for ease of use, comfort, and impact protection.
• Special thermoplastic polymer shell with variable thickness, designed to offer optimal impact protection while remaining lightweight.
• The innovative patented Alpinestars low-friction lining is applied to the inside of the main EPS shell to reduce rotational acceleration forces during certain oblique impacts.
• This layer acts as a sliding plane, mimicking cerebrospinal fluid and the brain's natural defense against oblique impacts.
• Patented visor release system ensures controlled opening and reduces forces on the neck during an impact.
• Optimized ventilation and high thermal exchange thanks to 10 air intakes and 7 exhausts.

Material 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