Abstract: A collapsible container made from card, board or like stiff material has its openings closable by means of pairs of overlapping flaps projecting from the free borders of its side walls. In order to permit the flaps to be separated from each other, to permit the container to be flattened after having been emptied, and for the container to be reerected without the use of any additional material, such as adhesive tape, the restrictive surfaces of the flaps have secured to them flat two-component non-adhesive couplings. Suitable couplings are those made from hooked- and looped-pile fabric, such as those sold under the trademark Velcro.