Abstract: This slipper, which may be used in particular as an overshoe and is adaptable to feet of different foot sizes, comprises a series of elastic gathers 27 along the upper edge defining an opening of the slipper and is characterized in that it comprises at least one second series of elastic gathers 28 placed in an intermediate region between the upper edge and the sole of the slipper. Application in protective slippers or overshoes for use over a short period, in particular in the medical, industrial and nuclear fields.