Perform physical therapies now in the comfort of your home. The "Move Those Shoulders" Overdoor Pulley Exerciser from Blue Jay has been designed in a way to transport and set up anywhere you want. Fit the Shoulder Pulley with Door Strap over the top of any standard door. Safely increase your range of shoulder motion and rehabilitate the arms, body or even the torso injury with this physical therapy equipment. The door strap shoulder pulley has excellent grip - thanks to the ergonomic foam handles