Question: what is the minimum age for a child to use a booster seat?
Answer: Children weighing more than 22kg and taller than 125cm can use a backless booster seat. Children of 12 years old or taller than 135cm do not need to use a child seat. Before this age or height they must do by law. Child seats must be fitted either using ISOFIX mountings or a diagonal seat belt strap.