Super-radical helmet has a molded 3D mask and real knotted fabric sash Shock-absorbing inner shell Easy-to-adjust chin strap Aerodynamic cooling vents CPSC 1203 Bike and ASTM F1492 Skate compliant My name’s Leo and I’ve got three rowdy brothers who always give me a hard time, but I keep them in line… usually. Master Splinter picked me to lead because I eat, sleep, and breathe ninjutsu. Not that my brothers aren’t good. I’m just better. Thanks, Leo. Adults will want to know that the helmet is CPSC 1203 Bike and ASTM F1942 Skate compliant. It features a shock-absorbing inner shell, an easy-to-adjust chin strap, and aerodynamic cooling vents. Kids only care that it is super-radical and has a molded 3D mask and real knotted fabric sash! For ages 3-5 (48-52 cm).