Children's car seats come in different shapes and sizes. This way, you can safely transport both newborn babies and children up to 12 years old by car in a suitable car seat for him or her. There are car seats that grow with your child and car seats for children that you can easily move to another car. Child car seats are divided into different groups. Which group of car seat you need depends on the weight and height of your child. In addition, the attachment method is also important. Car seats for children are secured using the seat belt or isofix attachment.