This car seat has a gap for a seat belt (when the seat is changed to a booster), between the back and bottom. the gap is on both sides. my child has gotten her leg stuck in the gap many many times. if i were in an accident while her leg is stuck, i cannot imagine the damage that would be done to her. every time she cries i have to pull over to check if her leg is stuck/get it out. this is incredibly dangerous. she is rear facing in the seat. she weighs 19 pounds. i have pictures if necessary to further describe this failure. graco forever with safety surround convertible car seat. model number: 1939912