Aluminium thermos flask

Two aluminium thermos flasks in blue and green, with ribbed walls and a white, removable plastic lid, only differ from each other in terms of their size and the shape of the plastic lid. In both cases, the lid is also used as a cup, although the blue flask’s cup has a regular ribbed structure and the green can’s lid is smooth apart from one horizontal groove. Both flasks have the same colourful front motif, which is by now hardly visible. The double-walled structure with a cavity kept hot drinks warm and cold drinks cool for a long time. Thus, the thermos flasks were not only very practical to transport drinks on the go, drinking out of the integrated cup, but also to provide refreshment or warmth depending on the activity and season. Thermos flasks were available in various shapes and colours.