How high do you need to not have a booster seat in france?

In France, children must use a booster seat until they are at least 135 cm (approximately 4 feet 5 inches) tall. However, if a child reaches the age of 10, they can legally travel without a booster seat as long as they are taller than this height. It is important to ensure that children are safely secured in vehicles according to their size and age for their safety.