In an outer container (1) there is disposed an inner container (2) which contains the product to be withdrawn in portions. On the top of a container cover (4) there is a diaphragm-like body (6) with a bore (7) for the emergence of the product. When not in use, the diaphragm-like body (6) lies tightly against a plug (8) which closes the bore (7). The plug (8) is joined by ribs (10) to a ring (11) to which the inner container, consisting of soft material, is fastened. The container cover (4) and the ring (11) are joined together by interlocking. When the outer container (1) is squeezed a pressure develops in the interstice between the two containers, which interstice can be shut off by an air valve (15), and by this pressure a certain amount of the product is forced out of the inner container (2) between the plug (8) and the yielding diaphragm-like body (6), whereupon the diaphragm-like body (6) returns again to the sealing position. The product is thus always protected against the access of air.