Explore a variety of new positions with an ordinary door. Just place the 2 heavy duty metal tubes over the top of any open door. close the door and lock for safety. Adjust to a comfortable height and get ready for the time of you life. Sets up in minutes. No permanent installation needed. Holds up to 400kg / 881lbs. Comes with 2 heavy duty metal door jam tubes. 2 acrylic leverage handles. padded seat. and a free satin eye mask.