If you know how hard it is to get a child to wear a helmet, then you know why we invented CPREME helmets. CPREME combines the latest helmet safety technology with our exclusive toy-inspired characters. CPREME helmets are the first helmets a child will want to wear, and parents will be happy to know that they meet all CPSC and ASTM safety requirements! While other helmet companies use flat printed graphics, Raskullz helmets are the first to use full 3D technology to grab a child's attention. They are designed to stand out in a bland helmet industry while being at the forefront of helmet safety technology. At Raskullz, we live by a simple belief: Protect the head - Inspire the imagination! ADDITIONAL INFORMATION- Size: 5+ years (50-54cm)- CPSC & ASTM certified: complies with CPSC and ASTM standards for bicycle helmets.- Molded 3D helmet design shakes up every child's world.- Absorbent eps inner shell protects the head.- Aerodynamic cooling vents keep your head cool.- Nylon straps adjust for a perfect fit.