Often parents put lots of padding on babies in the winter which makes the straps inefficient in a crash scenario. Padding is literally a space between the baby and the belt. During a crash the child is pushed forward making the whole opening in the shoulder area larger. This opening enables a child can fly out in a high impact crash. A child in a car seat is not secure if it is wearing padded clothing, the shoulder straps are too loose on the shoulders and the straps are not pulled tight.