what age for booster seat
Booster seats lift a child up to help adult seat belts fit children properly. Children must start riding in a booster upon outgrowing a forward-facing harness restraint (typically after turning age 4 and 40â60 pounds). It is safest for children to remain in a booster until they are 4 feet 9 inches tall, or at least age 8. Learn more about Minnesota's child passenger safety law, which requires a child who is both under age 8 and shorter than 4 feet 9 inches to be fastened in a child safety seat or booster.