SUNVP Child Multi-Sports Safety Bike Helmet Ultralight Adjustable Helmets for Bicycle Scooter Skateboard This is the very helmet targeted for kids sports.To be cool not only for your bicycle scooter ,but also roller-skating and so on. Super lightweight and breathable,designed for children,to protect children's safe. Easy to adjust webbing for a comfortable fit. unique and beautiful design, fashion model, reasonable hole design, breathable. Material: PC and High density EPS. Comfortable and durable for your most satisfactory pair of bike helmet. Head circumference: 20.47-22.05 inches(52-56cm) adjustable, head Width: 6.5 inches, Fit for 3-8 years old child.