one person at a time.Do not put 2 people under one belt.4.Never attempt to restrain a child in your lap using the 3-point retractable seat belt around both you and the child.The child could be severely injured or even killed in the event of a collision.5.Seat belts are matched sets.Do not mix or use this belt or parts with other types of seat belt.6.Belts that have been cut ,frayed,damaged or str