A carrying and/or uniting device (1), designed for mainly parallelepiped-shaped packages (4), having outer fastening tapes (8), provided with glue and designed to fasten the device onto a set of packages (49). The device is subdivided into a plurality of longitudinal or horizontal sections (12, 14), which are separated from each other by means of folding indications, designed as perforations or the like and/or tearing-off tapes or the like (11, 16, 18). At least one of these sections is provided with one or several recesses (13) with a carrying and/or information function. The device is close to the tearing-off indication provided with transverse perforations (9) for dividing up and consequently detaching separate packages from a set of packages, which are united by a device. In accordance with the invention the applied device with the carrying function has a rhomboidal open shape. In order to make it less bulky and/or for other reasons the applied device can be folded up on itself with its four central sections (12, 14), which in their folded up condition contact each other or almost, at the same time as the total height of the device is reduced.