DOT US Flag Captain America Three Quarter 3/4 Open Face Motorcycle Helmet (Size L, LG, Large) DOT captain america US flag stars and stripes three quarter 3/4 open face motorcycle helmet with removable visor Helmet Meets and Exceeds D.O.T. Safety Standards. FMVSS 218 Moisture Wicking Fabric Keeps Your Head Cooler And More Comfortable, Nylon Y-Strap D-Ring Retention System, Nickel Plated Rolled Tubular Steel Rivets Removable, Snap On Bubble Visor, Includes Goggle Strap, Free Black Mesh Headwrap and Free Cloth Draw String Helmet Bag, Clear Lacquer Finish How to measure for a motorcycle helmet. Use a fabric tape measure and measure the distance around your head just above your eyebrows. Then select a size from these options, all sizes in inches . - 3XS 17 1/8" - 18" / 2XS 18 1/8" - 19" / XS 19 1/8" - 20" / SM 20 1/8" - 21" / MD 21 1/8" - 22" / LG 22 1/8" - 23" / XL 23 1/8" - 24" / 2XL 24 1/8" - 25" / 3XL 25 1/8" - 26" / 4XL 26 1/8" - 27"