There are several different types of car safety seats. Each one is designed for a different weight and age range. Here we look at the guidelines for infant only car seats.
Infant only seats:
Infant-Only Seat Features
Detachable Base
Several infant-only seat models come with detachable bases. The base attaches
to the car, and the car safety seat easily snaps into the base. This way, you
can carry your baby in and out of the car without needing to install the car
safety seat each time. After buckling your baby into the car safety seat, you
simply click or snap the seat into the installed base. Some bases come with an
angle adjustor that makes it easier to recline newborns correctly. These car
safety seats also can be used without the base by installing the safety seat
into the vehicle with the seat belt, 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 car safety seat may fit better without the base.
Higher Weight and Height Limits
Several infant-only seats are available for use up to 22 pounds. Most
convertible seats also now have higher weight and height limits in the
rear-facing position for heavier or taller babies. Keep in mind that many
babies may reach the top height limits of the car safety seat before they
reach the top weight limits. If your infant's weight or height exceeds the
limits of the car safety seat before 1 year of age, use an infant-only seat or
a convertible seat that is approved for use rear-facing to a higher weight.
Harness Slots
Infant-only seats that come with more than one harness slot give more room for
growing babies. In the rear-facing position, the harness usually should be in
the slots at or below your baby's shoulders. Check the car safety seat
manufacturer's instructions to be sure. Handles. Carrying handles on car
safety seats vary greatly in style and ease of use. Most infant-only seats
require the handle to be down during travel. Check the manufacturer's
instructions to be sure.
Other Features
Angle indicators, built-in angle adjusters, harness adjusters and head support
systems are other features that may make correct use easier to achieve.
The recommendations in this statement do not indicate an exclusive course of treatment or serve as a standard of medical care. Variations, taking into account individual circumstances, may be appropriate.