Multisports helmet with removable tiara from Bell Sports, Inc.n; Hardshell construction with keep cool vents.;Complies with U.S. CPSC safety standards for bicycle helmets for person's aged 5 and older and Designed for use in skateboarding and trick roller skating and meets ASTM F1492-08 standards.;For ages 5 and up. Fits head sized 20 - 21 1/4 or 51-54 cm.;This high quality helmet was built to protect - the stunning and beautiful graphics that include Elsa, Anna and Olaf are just a nice bonus that your child is sure to love!;No helmet can protect from all head injuries. For maximum protection, read the included owner's manual to ensure the helmet is fitted and adjusted properly to fit your child's head.