The Raskullz DIY Cat helmet is customizable with fun stickers. Features: 3D cat ears with fun stickers for a customizable design PVC shell and EPS foam interior Aerodynamic cooling vents for added cooling Adjustable straps for a more customizable fit Vinyl stickers are removable to change your design Recommended for kids 5-8 years old but will fit anyone with a head measuring 50-54 cm Complies with the US CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older