1storm Youth Motocross Helmet BMX MX ATV Dirt Bike Helmet Hboy Matt Star Pink + Goggles + mg Youth Pink Glove Bundle Girl’s Size: Medium

Helmet Size Chart S 49-50 CM 19.3/19.7 Inch M 51-52 CM 20.1/20.5 Inch L 53-54 CM 20.9/21.3 Inch Helmet Size Tips 1Wrap a measuring tape around your head about a half-inch above eyebrows 2Take measurement two to three times to pick the largest one.Light weight durable aerodynamic thermoplastic alloy shell
Beautiful glossy UV protective finish
Removable and washable padding
DOT Approved.