* Lightweight outer shell is constructed from a technologically advanced impact resistant thermoplastic in two sizes. * The inner and outer surfaces are engineered to minimize the effects of oblique impacts. * Multiple density inner liner to ensure the correct density in the correct area for enhanced impact absorption. | Article: Alpinestars S-M5 Rover Motocross Helmet, black-grey, Size M | Article: Alpinestars S-M5 Rover Motocross Helmet, black-grey, Size M, black-grey, Size M