DOT Flat Black Motorcycle Half Helmet with Removable Visor (Size S, SM, Small) DOT flat dull black motorcycle half helmet with removable visor. Meets and exceeds DOT safety standards. FMVSS 218 Helmet Meets and Exceeds D.O.T. Safety Standards. Super light weight, Approximately 30 oz. Smallest construction Free Helmet Bag and Owners Manual included. Quality Plush Interior. Removable visor. Face Shield Compatible Stainless Steel Dual D-rings adjustable chin strap. Durable exterior finish. 1 year warranty. 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 . - XS 20 1/4 - 20 7/8 / SM 21 - 21 5/8 / MD 21 3/4 - 22 3/8 / LG 22 1/2 - 23 1/8 / XL 23 1/4 - 24 / 2XL 24 1/8 - 24 7/8 /