As well as being downhill ASTM F1952 and e-bike NTA 8776 certified, the Vanguard Core includes MIPS brain protection and was rated five stars at the Virginia Tech Helmet Lab. The Vanguard Core leads from the front, keeping your head as safe as possible while you shred the trailsKey Features:In-mould polycarbonate shell with EPS linerMIPS® C2 rotational management system, engineered to add protection in case of certain impactsFive-star rating from the Virginia Tech Helmet LabFidlock® magnetic buckle makes it easier to secure the helmetAdjustable C-shaped cheek-pads to help achieve the perfect fit, with two different thicknesses included.Integrated, fixed chin bar for full protection.ASTM 1952-15/2032-15 and NTA 8776 certifiedSafety release and flexible injected visor to avoid extra rotation of the neck in a crashBreathable chin bar with mud-grillSafe-T Heta fit system360° head belt and 3 vertical adjustments give you everything you need to find a uniquely individual fit24 vents work in