Design & Technology: Matte/gloss checker print and graffiti skull and bones graphic create a cool look Flexible 2" 3D rubber mohawk adds to the look Easy-to-use Dial Fit System provides an adjustable and secure fit with a turn of a dial Adjustable straps and aerodynamic cooling vents help keep your child comfortable Recommended for riders 5-8 years old, but will fit anyone with a head measuring 50-54 cm Complies with the US CPSC Safety Standard for Bicycle Hemet for Persons Age 5 and Older