Using the PTP Fitness PowerTube Door Anchor is super easy. First, find a suitable door. Slide the anchor through the hinge side of the door - this is for your safety. Next, take your PowerTube and thread it through the loop end of the anchor. You're now ready to do a bunch of popular gym and Pilates workouts. When using it, make sure the door is firmly closed and the anchor is properly placed. Don't over - stretch the tube beyond its limit. To keep your anchor in good shape, after each use, wipe it down with a dry cloth. Store it in a cool, dry place. Avoid exposing it to direct sunlight or extreme temperatures for a long time. If you notice any signs of wear and tear on the nylon webbing or the neoprene lining, it might be time to replace the anchor.