Abstract: The invention relates to a device executed as small fire-hose (1), which is made of plastic material, such as e.g. polyethylene foil, at its one extremity having a coupling bag (3) for connection to any type of draw-off point (2, 14) of the water supply and preferably at its other extremity being provided with a nozzle (7) fastened to it, disposable fire-hose (1) and coupling bag (3) having a flat cross-section in its non-use condition and having an approximately circular cross-section in its using condition or water-filled condition, as a result of which the disposable fire-hose (1) can be stored in a very compact way when in its non-use condition and is extremely cost-effective due to its material and can be disposed of after use, if necessary.