Joe Rocket R1000X Lithium MC-4 Full Face Motorcycle Helmet - X-Large Advanced Aerodynamic Polycarbonate Composite Sculptured Shell Dual Density, Lightweight EPS impact absorbing liner Superior fit and comfort through advancedCAD specifications Optically-superior 3D Faceshield: Hard coated anti-fog coated shield, tool-free closure Quadport 2.0 ventilation system: 2 massive front intakes channeled through to an aerodynamic rear venturi-effect exhaust spoiler, pulling heat &amp; humidity up and out