Adult Flat Matte Black Motorcross ATV Mx Off-road Dirt Bike Helmet (Medium) Beautiful matte UV protective finish and DOT approved light weight durable composite shell, heavily cushioned and comfortable interior removable and washable padding Well vented all purpose product for off-road riding. Medium Size: 22 1/4" - 22 3/4"; hat size: 7 1/8 - 7 1/4