The Safety 1st Grand 2-in-1 booster Car Seat may be the last one you will ever need. It features extended use in both of its two modes. It starts by keeping kids securely in a 5-point safety harness in forward-facing mode all the way up to 65 pounds. In its second mode, as a belt-positioning booster, it has them covered up to 120 pounds.The Grand 2-in-1 has also been tested for multiple types of crashes and exceeds federal safety standards. Its lightweight and easy to move from car to car, which is excellent for families who are always on the go.