This big, robust seat is designed to fit a newborn baby right up to a seven year old child. It can be used rear-facing in the front passenger seat for babies, and in the back seat once they are older. There is an additional locking clip that can be used in the rear-facing position, which makes the seat more secure. We found it very easy to install in both positions. The inner cushion and headrest can be removed as the baby grows. We liked the handy net pockets on the sides of the seat. The harness straps are very easy to adjust. The seat cover is removable for washing. Head support is good and all our testers sat comfortably in this car seat.