A: Hi there, Our 8+ helmet fits a head circumference of approximately 20.5 - 22 inches (52 - 56 cm). Thanks for your question!
A: It’s a youth 8-14. Just bought for a 5 yo, too big
A: Via Wipeout website: Complies with U.S. CPSC and ASTM safety standards for bike helmets, skateboarding, and trick roller skating.