The invention comprises a structure having at least two separate air chambers (7) enclosed by flexible, flat material (8) and having flexible bars in the interior thereof for stabilizing an external shape of the air chambers (7). The structure is characterized in that the air chambers (7) form a wall structure (4) in the inflated state. By means of such a wall structure (4) - preferably in conjunction with a corresponding ceiling structure (16) - lightweight berths (1), particularly for aircraft crew, flight passengers, or transported injured persons, can be set up quickly and simply.