The Maxi-Cosi Rodifix AP is suitable for children taller than a 100 centimeters. The headrest is adjustable in height, so that the chair can be used for all those years. Your child can easily get into the car, seat thanks to the open design of the chair and because the seat is secured with ISOFIX, the chair doesn't move while getting into the car. Once your child is in, secure him or her using the car seat belt. Because the seat has seat belt feeders, you can be sure that you're fastening the belt correctly. The Rodifix AP is suitable as a third car seat in the rear seat thanks to the flexible shoulder parts. A good option if you want to fit 3 kids in the back seat.