Closeout. All new scooter helmet designed with the sophisticated scooter owner in mind. Durable, thermoplastic shell. Adjustable D ring retaining straps. Removable cheek pads. Optically correct polycarbonate face shield with UV treatment and scratch resistant coating . DOT certified. HELMET SIZE INFORMATION. To dertmine size, measure around head one inch above eyebrows and across largest portion of back of head. 20 1/2 inches 52 CM 6 1/2 Hat size 2X Small. 20 7/8 inches 53 CM 6 5/8 Hat size Extra Small. 21 1/4 inches 54 CM 6 3/4 Hat size Extra Small. 21 5/8 inches 55 CM 6 7/8 Hat size Small. 22 inches 56 CM 7 Hat size Small. 22 3/8 inches 57 CM 7 1/8 Hat size Medium. 22 3/4 inches 58 CM 7 1/4 Hat size Medium. 23 1/8 inches 59 CM 7 3/8 Hat size Large. 23 1/2 inches 60 CM 7 1/2 Hat size Large. 24 inches 61 CM 7 5/8 Hat size Extra Large. 24 3/8 inches 62 CM 7 3/4 Hat size Extra Large. 24 3/4 inches 63 CM 7 7/8 Hat size 2X Large. 25 1/5 inches 64 CM 8 Hat size 2X Large.