-DOT Approved; Size L (57-58 CM,22.4/22.8 Inch)-the helmet comes with one installed tinted shield and one extra spare clear s-Advance Aerodynamics Design & Quick Release Buckle Design;-Light Weight Durable Aerodynamic Thermoplastic Alloy Shell-Beauti..
-DOT Approved; Size M (55-56 CM,21.7/22.0 Inch)-the helmet comes with one installed tinted shield and one extra spare clear s-Advance Aerodynamics Design & Quick Release Buckle Design;-Light Weight Durable Aerodynamic Thermoplastic Alloy Shell-Beauti..
-DOT Approved; Size S (55-56 CM 21.7/22.0 Inch);-3-level top ventilation control and 5-position ventilation channel;-Heavily cushioned and comfortable interior, Removable and washable-Ultra light weight durable aerodynamic thermoplastic alloy shell;-..