The Radix combines rugged style and durability to meet the demands of demanding trails. Deep coverage, light weight and ventilation - everything you need when you spend all day on the trails. The highly adjustable Roc Loc 5.5 system allows you to adjust the helmet perfectly to the shape of your head. The P.O.V. visor can be adjusted by 15 degrees, and the robust polycarbonate outer shell is firmly bonded to the EPS inner shell for greater durability and better ventilation thanks to Giro's in-mould construction.