Abstract: The most broadly used jumping device today is a mini trampoline. This design has limitations and drawbacks: only one person may jump on it at any given time, the jumping techniques are limited to high jumps in the center of the jumping bed, and there is a risk of injury caused by the hard metal frame. Attempts of creating jumping devices without these disadvantages on the basis of an inflatable hose have failed due to their low positional stability—they shift and lift off the ground. The invention therefore provides the following solutions to the problem. In order to stabilize the jumping device comprising an enclosed tube (1), the device is weighted down by partially filling it with liquid (3) or bulk material. In order to prevent the filling from flowing off on an inclined subsurface, it is filled into a separate container that is located outside or inside of the air tube. In order to stabilize the device without any filling, the hose is attached to the ground by means of retaining fixtures.