AGV K3 SV Adult Imola 1998 Street Motorcycle Helmet - Red/Green/White / Medium/Large - DOT-Approved HIR-TH (High Resistance Thermoplastic Resin) shell construction 4 EPS sizes optimized using the FEM (Finite Elements Analysis) system Ventilation system was designed and optimized in a wind tunnel GT 2 scratch-resistant, anti-fog polycarbonate face shield with 100% protection from UV rays DOT-Approved, Street Legal in the United States