Atkinson is an English-language surname. The name is derived from a patronymic form of the Middle English Atkin.
Once children outgrow their booster seat (usually at 10 â 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.
Keep children in each seat up to the maximum age/weight/height limits before moving to the next phase. ALL children younger than age 13 years should ride properly restrained in the back seat. But until they reach phase 4, they need to be strapped in properly in a safe car seat.