Too big for a car seat, too little for just a seat belt. State Senators have heard arguments in favor of adopting a state booster seat belt law designed to bridge the gap between the two. Under the proposal, children four to six years old or weighing less than 65 pounds would be required to use the booster seat. Carla Sauerwein, a pediatric nurse from the St. Louis area with 10 years of experience says the boosters help and kids like them. Sauerwein tells a Senate Transportation Committee small children who don’t use a booster have the seat belt going across the stomach and neck, instead of the stronger hips and shoulder. She says that leads to injuries to the internal organs in what is sometimes called “seat belt syndrome.”