The American Academy of Pediatrics recommends that kids use a car seat until they reach the maximum height or weight for that five-point harness. 2 This is usually not until at least age four, according to the National Highway Traffic Safety Administration (NHTSA).

What height do you stop using a 5-point harness?

When to Stop Using a Booster Seat

And these rules may surprise you. Once again, the laws and requirements are different for each state, but typically, your child should remain in a booster until they reach the age of eight and a standing height of at least 4 feet 9 inches.

What is the weight limit for 5-point harness?

Typically, the 5-point harness on a booster seat can be used up to 65-90 pounds depending on the model. Once your child reaches that limit, you can continue using the seat along with the vehicle's seat belt.