Car seats for the oldest children are seats up to 36 kg. They can be divided into dedicated only to the oldest group, but also car seats with a wide weight range, e.g. 0-36 kg. Car seats intended only for groups II and III do not have integrated 5-point belts and use 3-point car belts to secure the child. The 15-36 kg group includes car seats with and without a backrest. Both types of car seat are suitable for children between 3 and 12 years of age.