Product Information Fiberglass Spectra® composite weave shell Meets or exceeds SNELL M2005 & DOT standards & FIM race ready Wind tunnel tested aerodynamic shell shape Multiple density impact absorbing EPS liner Three shell sizes provide superior “sport” fit Exclusive Quad Port ventilation system [4 external / 6 internal ports] Adjustable “Ram Air” chin bar vent Integrated / removable breath deflector 2 stage compression shield closure system Improved, tool-less shield removal & installation Hard coated & optically superior 3D shield design rated at 95% UV resistant Removable, washable interior system wicks away moisture and promotes increased air circulation. Streamline, wrap-around neck roll reduces wind noise Deluxe helmet storage bag Included Built-in communication system speaker cavity Optional shields: RST mirrored, high definition, smoke, Pinlock® ready & 2D race shields w/ tear-off posts. Available in sizes XS thru XXL. These Joe Rocket Helmets are manufactured by HJC, so please refer to HJC’s size chart