Razor V-17 Child Multi-sport Helmet Cutting-edge children's safety helmet for biking, skating, and more Ergonomic interior padding is comfortable and secure 17 top and side vents help rider keep a cool head on hot days Side release buckles adjust and fasten quickly; sleek black gloss color Fits head sizes 21.5 to 22 inches; for ages 5 to 8; complies with CPSC standards