The Bell Sports Barbie Child Helmet - Roller Girl features a hard shell construction for multi sport protection. The top and rear vents help keep your noggin cool and fits head sizes 20 to 21 inches. Plus, it comes with a coordinating Barbie mirror. The Bell Sports Barbie Child Helmet - Roller Girl complies with CPSC bike and ASTM 1492 skate standards. Toys"R"Us recognizes that at any given moment in history, Barbie® is a reflection of the times and always culturally relevant. Barbie® is the world"s only brand that allows girls to imagine themselves as a mermaid to a movie star, a fairy to a fashionista and a princess to a president. With various doll styles, accessories, playsets, along with role play costumes and collectibles, Barbie® is on-trend without being trendy, classic without being outdated! The Barbie® brand serves a purpose to girls as they try on different personalities, careers, and explore the world and all of its possibilities without ever having to leave home! Although the Barbie® brand roots are as a fashion doll, it has grown into a fashion and lifestyle brand, spanning numerous product categories...all available at Toys"R"Us!