Properties: The durable ABS helmet shell is equipped with a shock-absorbing EPS foam liner, 7mm thick sealing foam inserts and a soft chin bar for excellent protection and comfort. Easily adjust the helmet size using the rear dial. The safe kids scooter helmet has 6 battery-powered LED rear lights that flash in 3 different modes (on/flash/quick flash) for maximum visibility and added safety. Size XS-S (48-53 cm) Our kids' helmets now feature extra safety features and a comfortable chin pad, so kids can safely ride their scooter or bike for hours! Our children's helmets feature a battery-powered rear light (6 LEDs) that flashes in 3 different modes for added visibility and safety. You can easily adjust the helmet size using the rear dial. Our children's helmets also feature 7mm thick sealing pads, a soft chin bar, and adjustable straps. The design with 11 ventilation holes ensures comfortable use for a long time.