Doorway jumpers

In the doorway

— this type of jumper is suspended on the door jamb by means of a special attachment. This is convenient, because the attachment requires minimal effort during installation and fits almost any door, and the jumpers themselves are quite compact when folded and easy to transport. At the same time, such jumpers when installed occupy the doorway, which may cause inconvenience to others; it is difficult to install them in another place.