What is a Booster Seat?

Backless or high-back seat that raises and positions a child so the vehicle seat belt fits  correctly over the stronger points of a child’s body, the hips and across the chest; must be  used with a lap-and-shoulder belt; also referred to as belt-positioning booster or BPB.  Booster seats are intended for children who have outgrown forward-facing car seats but are  not yet tall enough to safely use a vehicle's standard seatbelt.