This Fisher-Price safe voyage 3 stage booster seat fits into the car using the seat belt provided in your car. It easily fits into the back of the chair meaning you don't need to splash out on experts fitting it to your car. This chair can be used as a car seat for use with a harness, a lap and diagonal seatbelt or as a booster seat. It has a 5 point harness and is washable. It also includes a sliding headrest for harness height adjustment meaning you are able to amend the height of the seat according to your child. It has a ECER44/03 safety certificate and an age range of 9 months+.