ALPINESTARS Supertech M10 Motorcycle Helmet - Ampress - MIPS® - Matte Black/White - Medium 8300823-1121-MThe S M10's design offers a smooth, attractive, aerodynamic profile which is streamlined and free of any external channels and features that might act as a load point in an impact or compromise the overall integrity of the helmet's construction Surface curvature promotes reduced friction on impact, allowing deflection and transfer of energy to protect the rider's head from direct force to the skull and referred to the neck and spinal column The S M10