have outgrown the rear-facing weight or height limit of
their rear-facing convertible child seat. Children should
remain in a forward-facing child seat with a harness for
as long as possible, up to the highest weight or height
allowed by the child seat.
All children whose weight or height is above the
forward-facing limit for the child seat should use a
belt-positioning booster seat until the vehicle’s seat belts
fit properly. If the child cannot sit with knees bent over
the vehicle’s seat cushion while the child’s back is against
the seatback, they should use a belt-positioning booster
seat. The child and belt-positioning booster seat are held
in the vehicle by the seat belt.