The invention concerns an inflatable object with an illuminating device. An inflatable shroud (1) is tightly fixed to a tubular element (2) forming a support structure, an illuminating element (3) is fixed to one end of the element (2) located inside the inflatable element. The shroud (1) is inflated and the illuminating element (3) is supplied with electric power via the tubular element (2). An annular element (7) fixed to the tubular element (1) and arranged outside the shroud (1) stabilises the latter.