I had my twin seven-year-old granddaughters in the car in these booster seats, and we were in a collision on the freeway. Traffic was slow about 30-35 MPH, and we were rear-ended. My vehicle was pushed into the car in front of us… My car had over $10,000 worth of damage. Other than being frightened, my Grandaughter’s were not injured, nor did they complain about any injury or soreness the next day