Children up to 20-40 pounds needs to be accommodated in a booster car seat with harness. Booster Seat is an elevated chair that can be hand-pressed for funds and the use of standard seat belts, which are there in most vehicles. Best Booster seats are available with 5-point harness system and are designed with utmost safety in mind. After reaching the level of 40 pounds,children need not to have back Booster Seat and make the use of the vehicle harness straps. Booster seats also the best fit to put on a child as they grow.