You have two options if you want to buy car seats for your infant child. You can either use an infant car seat or a convertible car seat. The infant car seat is specifically designed for newborns & infants to keep them safer & more comfortable. It will last for your kid from the newborn stage to 18 months. Plus, the installation, removal, and transportation are easy. On the contrary, the convertible car seat is designed to grow with your child. This one will be usable until your kid turns ten years old.  The best thing is that you do not have to buy a new car seat at every stage of your kid’s life. But the drawback is that convertible seats are bulky and not ideal for transportation.