Booster Seats provide an extra step between child safety seats and seatbelts. Boosters are intended to lift the child up off the vehicle seat to improve the fit of the adult lap and shoulder seatbelt. The lap portion of the belt should fit low on the hips or high on the thighs and the shoulder portion of the belt should be snug across the collarbone. An improper fit of the adult safety belt can cause the lap belt to ride up over the stomach and the shoulder belt to cut across the neck, potentially exposing the child to serious abdominal or neck injury. According to Partners for Child Passenger Safety (PCPS – 2001), more than 90% of 4 to 8-year-old children who were seriously injured in a crash were not restrained in a booster seat.