Americas smallest thinnest German Style Low profile DOT half helmet

Thinnest DOT Liner Ever  Ultra Low Profile Design - Sits Low On Your Head Incredibly Sleek And Comfortable- You Get The Novelty Helmet Look And Feel Yet Very Comfortable and stylish Strong High Impact Resin Shell Super Lightweight No More Mushroom Head Look Meets  Dot Fmvss No.218 Standards           Size Head size in cm Head size in inches (Range) XS 40.00 42.00 15 3/4 16 1/2 S 46.28 48.28 18 2/9 19    M 52.56 54.56 20 2/3 21 1/2 L 56.33 58.33 22 1/6 23    XL 61.36 63.36 24 1/6 25    2XL 65.13 67.13 25 2/3 26 3/7