1:An infant car seat is designed for infants. This is usually from birth until your baby weighs in at about 20 pounds. These car seats are designed to ride in your car in the rear facing position. They are not designed to be turned around to a forward facing position.

An infant car seat can last you six to twelve months depending on the growth rate of your baby. Some babies out grow the infant car seat faster than others. Once your baby has outgrown this car seat you will need to switch to another type of car seat designed for older babies and toddlers.

The infant car seat can also double as a carrier. You can carry your baby out of the car to the house, grocery or anywhere. Many models of this infant car seat can either be strapped into the car directly or into a base that stays strapped into the car seat. Multiple bases can be purchased for multiple cars.

2:An infant car seat is designed for infants. This is usually from birth until your baby weighs in at about 20 pounds. These car seats are designed to ride in your car in the rear facing position. They are not designed to be turned around to a forward facing position.

An infant car seat can last you six to twelve months depending on the growth rate of your baby. Some babies out grow the infant car seat faster than others. Once your baby has outgrown this car seat you will need to switch to another type of car seat designed for older babies and toddlers.

The infant car seat can also double as a carrier. You can carry your baby out of the car to the house, grocery or anywhere. Many models of this infant car seat can either be strapped into the car directly or into a base that stays strapped into the car seat. Multiple bases can be purchased for multiple cars.

3:This type of convertible car seat is not often found anymore. There was a question of its safety, particularly with smaller infants under 20 pounds. Be sure to check any seat you have for recalls, with or without the shield.

4:Booster car seats are to be used only for toddlers in a forward facing position. The minimum weight requirement varies from 30-40 pounds, depending on the model you select. The good news is that the booster car seat can take your child safely to 80 pounds in a car seat. As infant car seat laws change and vary state to state many states are going with higher weight requirements for children in car seats.

This type of car seat can have its own set of buckles or harness or it can use the seat belt already found in your car. Your child's height will dictate which is most comfortable. So I'd recommend trying the car seat out with your child prior to purchasing it.