Booster seats are designed to raise a child up so that the lap and shoulder seat belts fit properly over strong growing bones.
In this video, Benjamin Hoffman, MD, FAAP, a pediatrician and certified car seat technician, guides parents on how to properly use and install booster seats in your vehicle. Booster seats should be used until your child can correctly fit in the adult lap and shoulder seat belts, typically when they are around 4 feet 9 inches in height and 8 to 12 years old.
AAP App for Selecting, Installing Car Seats: Car Seat Check
Quickly learn what car seat is right for your child based on age, height, and weight. This app for Apple and Android devices includes installation instruction videos, audio clips, and articles help you use the seat safely. Review the full sortable product guide, including prices and size limits.