When you buy a new seat, make sure you send the registration card to the manufacturer so you will be notified of any problems or recalls. Infant seat features Detachable base. Several infant seat models come with detachable bases. The base stays in the car so you do not need to install it every time you put your baby in the car. After buckling your baby into the seat, you simply lock the seat into the base.
Some bases are adjustable to make it easier to get the right level of recline for newborns.
These seats can also be used without the base or you can buy additional bases for other cars. However, this feature is only helpful if the base fits tightly into your car. In some cases, the seat may fit better without the base. Higher weight limits. Several infant seats are available for use up to 22 pounds.