The Bell Men's Full-9 Mountain Bike Helmet meets the most stringent ASTM Downhill Mountain Bike Racing standard as well as CPSC and CE bicycle safety benchmarks. Additional motocross trickle-down technologies include the Eject Helmet Removal System and magnetic cheekpads. Beyond that, the Full-9 includes features like Soundtrax built-in speaker pockets and audio cable routing, and an integrated breakaway camera mount. Add in a lightweight carbon shell, a wide field of view, Overbrow Ventilation intakes and Velocity Flow Ventilation and you have the worlds most advanced helmet for DH or BMX.