A car seat is a special chair that you sit in when you ride in a car. It's different from a regular chair because it's made to keep you safe if there's an accident or if the car stops suddenly.
When you're in a car seat, you have to wear a special seatbelt that goes over your shoulder and around your waist. The seatbelt helps keep you in the car seat and stops you from moving around too much.
There are different types of car seats for different ages and sizes of kids. For babies, there are special car seats that face the back of the car. These are called rear-facing car seats. They're good for babies because they're made to protect their heads and necks if there's a crash.
As you get bigger, you'll need a different kind of car seat. There are car seats that face forward, and there are booster seats that help raise you up so the regular seatbelt fits you better.
It's very important to use a car seat every time you get in the car because it can keep you safe if something bad happens. Always make sure your car seat is installed correctly and that the seatbelt is buckled properly. If you're not sure how to use your car seat, ask a grown-up for help!