The dual-certified Kinderfeets Helmet provides advanced protection for little balance bikers, scooters, and skaters. The Adjustable Fit Dial System provides both comfort and safety, ensuring the helmet is a custom fit for every child within the size range (head circumference = 46 to 52cm) and can accommodate growing heads! Two sets of Sweatsaver™ Fit Pads are included and ventilation holes generate maximum airflow so little ones can keep cool and comfortable as they ride.