The Giro Source helmet with a detachable visor is the perfect companion for any trail and doubletrack. It has an extended design at the back for added protection. The Roc Loc 5 adjustment system with integrated MIPS® technology allows the helmet to be easily customized to fit the shape of the head while providing additional comfort and safety. Colors: black, white, black/green, pink Sizes: S: head circumference 51-55 M: head circumference 55-59