Ride to school or laps around the neighborhood, the Bell Rally is always up for an adventure. The Bell True Fit system helps ensure a comfy fit that grows with your child from training wheels to two-wheels. 16 vents keep little heads extra cool and the rear reflectors ensures an enhanced visibility as your kiddo cruises the neighborhood. Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older.