Dual-Corded PVC rope PVC wrapped around cotton cording to prevent stretching. Steel bearings provide a smooth, consistent swing motion and are highly durable. Dual-injection molded handles allow for a firmer and more comfortable grip while providing the maximum in control. 9ft.length that can be shortened. To determine the proper length of the rope you should be jumping with, loop and hold down the center of the rope beneath your left foot, hold the handles in your left hand. When you completely straighten the rope line upward, the handles should be level with the top of your armpit.