Specifications: Equipped with ventilated holes, the helmet is breathable. And the ultralight design and adjustable strap make it comfortable to wear.It is the bicycle helmet that can protect your head from injury when you are riding on the road. As it is impact resistant and shock absorbing.It is made of high-quality PC and EPS material.The inner length of this bicycle helmet is 22cm, inner width is 18cm. The head circumference is from 57cm to 62cm.It is suitable for riding, cycling, skateboarding and so on.Size Details: Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.Package Includes: 1 x Helmet