Alpinestars S-M3 Radium black white grey helmet

The Alpinestars S-M3 Radium hel met is a high quality off-road and motocross helmet designed to offer protection, lightness and comfort during off-road, enduro and motocross use. The thermo-injected shell incorporates a blend of polymers with variable thicknesses that ensures a perfect balance between strength and low weight, optimising resistance to the impacts typical of off-road riding. The internal structure in variable density multi-zone EPS is designed to effectively absorb energy in the event of impact, increasing the rider's overall safety.

The ventilation system is designed to maximise air circulation thanks to numerous frontal intakes and rear extractors, keeping the head cool even on the toughest and muddiest routes. The helmet has an adjustable visor with patented release system, designed to reduce the forces on the neck in the event of impact and to channel air to the ventilation channels.

The inner padding is soft, breathable and completely removable and washable, ensuring comfort and hygiene even after long days of riding. The ERS emergency extraction system allows the helmet to be removed quickly and safely, and the double buckle closure ensures a stable and secure fit. With ECE 22-06 homologation, the S-M3 Radium combines certified protection and functional design for all off-road enthusiasts.