The name Kaidan originated as an English name. The name Kaidan is most often used as a boy name or male name. In English, the name Kaidan means -
You can safely switch your child to a booster seat if she's at least 4 years old and she weighs 40 pounds or more or has grown too tall for her car seat (when her shoulders are higher than the top set of harness-strap slots in the car seat's back).
Adult Safety Belt. Once children outgrow their booster seat (usually at 10  12 years old) they can use the adult lap/shoulder safety belt if it fits them properly. Lap portion low over the hips/tops of thighs and shoulder belt crosses the center of the shoulder and center of the chest.