Remi Youth transforms Retrospec's fan-favorite grown-up helmet into a stylish and safe kids' helmet! Ventilated and breathable. Removable/washable interior. Built-in visor. They're ready to roll. Features: Youth bike and skate helmet designed for everyday use 11 air vents for optimal airflow Easy-to-adjust nylon straps and an ErgoKnob dial for a snug fit Built-in visor shield the sun and provides better visibility Interior padding wicks away sweat and is removable for easy cleaning Size: 19.25 in. - 20.75 in. / 49 cm - 53 cm Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older