A convertible car seat is a type of car seat that can be used in two distinct modes—rear-facing for newborns and toddlers, and forward-facing when the child meets the height or weight requirements. This means that it can be used from the day the baby is born until they are ready for a booster seat, making it a long-lasting option. Convertible car seats typically have greater weight and height limits for the rear-facing setting than infant car seats, allowing the baby to ride rear-facing for a longer period of time. They are installed as a more "permanent" car seat and are not designed to be portable like infant car seats. It is recommended to keep the child rear-facing for as long as possible for the protection of their developing head, neck, and spine. Some convertible car seats can even be turned into a booster seat for older kids. These car seats are known for their extended use and can have additional features designed for infants, toddlers, preschoolers, and big kids. It is important to choose a convertible car seat that meets federal motor vehicle safety standards and has a five-point harness.