A power systems brand! perform strength and fitness exercises with the double cords. Perfect if you are short on space. Double cords offer a tube on each end for full range of motion and simulate exercises performed on cable machines or door jams. Exercise tubing is one of the most affordable training tools available and can provide and effective upper- and lower-body workout for anyone. Unlike conventional equipment, resistance tubing allows you to work in multiple planes of movement. Their elastic properties give you varying levels of Intensity and provides a full range of motion. The versa-tubes is a perfect product for personal training and clubs. It is a great option to travel with when you are wanting to workout on-the-go. All power systems Brand tubing products are produced with a unique layering process to improve longevity in institutional or commercial settings. Please inspect tubing products before each use. In institutional settings, we recommended inspecting all tubing products on a 90 day basis to insure wear and usage is no excessive and replace as necessary.