Of course, when you have a baby, you will need to purchase a car seat for them. This is definitely a necessity. However, if you only purchase a car seat, then you will have to purchase a stroller separately. If you do not purchase a stroller, you will end up having to carry your baby everywhere that you go. You will soon realize that this is not an easy task, even if you have a baby carrier. You will need a baby carrier for those times that you are shopping because it is not safe to put an infant in the front area of the cart. They are too small to fit in this area when they are newborns. If you buy a travel system such as the Chicco Cortina Travel System, then you will not have to worry about having to carry your infant everywhere that you go because you can put the carrier in the shopping cart.