Hawk ST-553-13WG Evolution 2-IN-1 White Modular Helmet - X-Large Advanced Composite Thermoplastic Shell Aerodynamic shell design for stability at higher speeds 2-In-1 Helmet: Helmet is both a Full face helmet and a 3/4 helmet Quickly convert from a full face to a open face helmet by removing chin-bar by releasing dual levers located underneath Clear faceshield with Spring Lock System: Reduces drag while your on your ride, will stay in the locked position to keep you focused