Set comprising at least two containers with respective different inner volumes, wherein the containers each comprise: - a base , - a casing circumferentially interfaced therewith, and - an opening section defined by an end of the casing facing away from the base , the opening section providing access to the respective inner volumes wherein at least one wall section of the respective casing runs at an angle with respect to a vertical axis of the container running perpendicular to the base , such that an inside section of the container , defined respectively by the casing , decreases continuously from the opening section to the base , and the opening sections of all containers of the set are identical, and two opposite wall sections of the respective casing of all containers of the set each comprise - a linear section , in which the two wall sections in each vertical projection plane parallel to a vertical axis of the container transversal to the wall sections leave two traces of a plane diverging to the opening section , which respectively enclose an angle (α) with the vertical axis of at least 2 degrees, preferably an angle between 2 degrees and 5 degrees, characterised in that the bases of all containers of the set are also identical and the wall sections of the respective casing of all containers of the set each comprise - a transition section composed of two curved sections, whose intersection curve with the vertical projection plane merges tangentially both with the linear section and also with a respective intersection curve of the base , wherein a curved section adjoining the linear section has a wider radius than a curved section adjoining the base and the two curved sections merge tangentially into one another. - a base , - a casing circumferentially interfaced therewith, and - an opening section defined by an end of the casing facing away from the base , the opening section providing access to the respective inner volumes wherein at least one wall section of the respective casing runs at an angle with respect to a vertical axis of the container running perpendicular to the base , such that an inside section of the container , defined respectively by the casing , decreases continuously from the opening section to the base , and the opening sections of all containers of the set are identical, and two opposite wall sections of the respective casing of all containers of the set each comprise wherein at least one wall section of the respective casing runs at an angle with respect to a vertical axis of the container running perpendicular to the base , such that an inside section of the container , defined respectively by the casing , decreases continuously from the opening section to the base , and the opening sections of all containers of the set are identical, and two opposite wall sections of the respective casing of all containers of the set each comprise - a linear section , in which the two wall sections in each vertical projection plane parallel to a vertical axis of the container transversal to the wall sections leave two traces of a plane diverging to the opening section , which respectively enclose an angle (α) with the vertical axis of at least 2 degrees, preferably an angle between 2 degrees and 5 degrees, characterised in that the bases of all containers of the set are also identical and the wall sections of the respective casing of all containers of the set each comprise - a transition section composed of two curved sections, whose intersection curve with the vertical projection plane merges tangentially both with the linear section and also with a respective intersection curve of the base , wherein a curved section adjoining the linear section has a wider radius than a curved section adjoining the base and the two curved sections merge tangentially into one another. <EOS>