Ride with confidence! From the leader in head protection . the Bell Focus child-sized helmet gives you the on-trend look of the multi-sport helmet . but is cool and lightweight to wear. Using fusion technology . the Focus delivers a durable . lighter helmet that also has 12 vents to keep you cooler while riding or skating. Recommended for ages 5+ . but will fit most heads measuring 50-56 cm. IMPORTANT: Always take a head measurement. Head sizes and shapes vary . even within an age range. Using a helmet that does not fit can be dangerous. Complies with the U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older.