Best Car Seat For 3 Year Old . Seats can be used often rear- forward or facing – experiencing. They’re typically the next step after the child seat. However, many types can suit typical- many parents elect to skip the baby chair altogether and work with a convertible from the comfort of the start and sized full-term newborns nicely. For optimum collision protection, work with a convertible fit while in the rear- before the child reaches both the rear facing location -facing level or weight limit. Using a few conditions for even the greatest toddlers or the convertibles and/, most children could remain properly rear- till they are 2 or 3 yrs old, facing. Peak and fat limits differ with respect to the type that is particular. Convertible seats are more permanent while in the car, which means you eliminate the comfort attributes of the child seat.