Graco milestone all in one car seat is the only car seat youll ever need its comfortable for your child and convenient for you transitioning from rear facing infant car seat birth to 13kg to forward facing 5 point harness seat 9 18kg to high back booster 15 36kg for a proper fit the harness system and 10 position headrest lets you adjust the harness and headrest together with no rethreading side impact protection provides the best head protection at every stage and features a st