Car Seats: Tween

When Give up the Car Seat

My son is 4.5 yrs. old and I still have him ride in his car seat. He sits in the seat but it's fastened w/ a seat belt not the harness of the car seat. The car seat says it goes up to 100 lbs. but I don't know if I need to keep him in it that long. So my question to all you mom's out there is: what is the right age or weight to give up the car seat? Thanks