As linemen change position on poles the D rings adjust easily to movement. As a direct result the pole strap will rub the pole less frequently & receive less wear. Any pull or load doesn't bind the tools to the tool loops.

Your comfort as a lineman with a belt will depend on the belt materials and D ring location. For the best fit you must order by using a measurement known as D-size. This D-size refers to distance between D ring heels. While wearing a lineman belt, your D-rings are best when located approximately 1 in. (25 millimeters) in front of your hip bones. For proper D size make a measurement across your back, hip bone - hip bone & add an additional 2 in. (51 millimeters). This is your D-size.

I119 Harness User Manual