This is an essential accessory that will turn your PowerTube(s) into a true gym or Pilates reformer machine, regardless of where you are. Compatible with the PTP PowerTube and PowerTube+, it allows you to train from various anchor heights in the comfort of your own home or in a hotel room when on-the-move. Simply slide your PTP Door Anchor through the hinge side of your door (for added safety) and thread your tube through the loop end to perform all the most popular gym and Pilates workouts.Soft neoprene lining on the loop end to protect tube from abrasions.Heavy-duty nylon webbing and stitching built to last.Thick foam end to prevent damages to your door.