3 sizes available. Small: 18.9'-21.3' (48-54 cm), suitable for kids 2-8 years old. Medium: 21.3'-22.4' (54-57 cm), suitable for youth 8-14 years old. Large: 22.4'-24' (57-61 cm), suitable for people aged above 14
ABS shell resists impact and high quality EPS foam provides shock-absorbing. Complies with U.S. Consumer Product Safety Commission Safety Standard for Bicycle Helmets for Persons Age 5 and Older
11 top and side vents keep user cool and comfortable
Suitable for various outdoor sports such as cycling, skateboarding and so on
Fully adjustable, provided by the crank adjustment dial, 2 sets of pads with different thickness, and length-adjustable chin straps
