The Alpinestars Supertech family of helmets is engineered to be the most advanced, protective, and performance-enhancing helmets for riders worldwide. The S-M10 offers an optimal balance of ventilation and comfort with the lightest possible weight, without compromising on protection. Its design features a smooth, aerodynamic profile, free of external channels that could compromise integrity during an impact. The surface curvature is designed to reduce friction and facilitate deflection, ensuring efficient energy transfer to protect the rider's head from direct force and referred impacts to the neck and spine. Key Features: * Lightweight ECE 1260g (size Medium), 1310g with side padding, 1370g with visor extension * Double D closure * ECE 22.06 compliant