EEC/DOT Helmet, Open Face Helmet, Motorcycle Helmet(XH-D18)Adjustable back slide vents in rear diffuser EEC/DOT Helmet, ... Open Face Helmet, Motorcycle Helmet(XH-D18)ABS shellNew unique shell designDual Density EPS inner linerRemovable and ... -Large EEC/DOT Helmet, Open Face Helmet, Motorcycle Helmet(XH-D18)