"This helmet is safe for children who have a high risk of falls." This product was made seriously by BELL. Kids Helmet. This is an authentic helmet for kids made using the same formula as BELL FACtion, which is famous for adult action sports helmets. Made of EPS foam, the strength is less likely to pull in at all compared to adults. The practical and sophisticated design is perfect for balancing bikes such as striders. This helmet is the best choice for active kids! Adjustable pad included (Details) Target Audience: 3+ (estimated from 1 to 3 years); Size: 18.9 - 20.5 inches (48 - 52 cm); Number of Ventilation: 8; On the back of the head there is a reflector that notifies you of your presence at night or in the car.