The Diamondback Fox Run is a great helmet for any kids going out adventuring on their bikes. Offering tested protection in a no-nonsense package. The durable, in-moulded polycarbonate shell helps to aid in resisting friction if an impact occurs. The other benefit is that it adds a light-weight barrier that will protect the ABS liner from wear & tear when transporting all their gear to and from the parks and trailheads. Among that you also get a dial-fit adjust system to ensure a precise fit, and 21 cooling vents to help from over-heating.