How are body belts sized for use in fall protection systems?

Body belts used in fall protection systems are sized primarily by measuring the distance between the hip bones. This measurement is critical because it ensures that the belt fits snugly around the person's waist, providing adequate support and safety during work at heights. A properly fitted body belt is essential for the effectiveness of fall protection systems as it helps to distribute forces evenly across the wearer's body in the event of a fall, thus minimizing the risk of injury.

This sizing method ensures better comfort and security compared to other measurements, as the hip bones are a more stable point for securing the belt while ensuring it remains in place during movements. The other sizing methods mentioned are less effective for achieving the required fit for a body belt, which should allow for both safety and mobility while working in elevated positions.