A small measuring tape helps ... HEYNER® LIFE SEKTOR ...for maximum safety in the car Your child needs at least 55 cm "survival space" in a forward-facing child car seat. If the minimum safety distance is not kept between the child seat and the front seat, it can lead in case of a frontal car crash, to serious injuries. There is an increased risk of injury, if the front seat is pushed back too far or if bulky objects, such as bags or tablets, are attached to the backrest of the seat. It can result in head and neck injuries. Measure the correct distance regularly to provide the best protection to your small passengers. The small yellow flag on the head of the seat serves as an additional guidance and aid to measure correctly.