The invention relates to a double-walled cup (1) which comprises an inner and an outer wall as well as a cup opening on its upper end and a bottom part on its lower end. The outer wall is substantially produced from paper, cardboard or the like. The object of the invention is to improve said double-walled cup (1) in such a manner that it can be more rapidly and simply produced and assembled and to reduce the structural stability of the double-walled cup while maintaining its corresponding thermal insulating properties. For this purpose, the inner cup providing the inner wall is inserted into the outer cup (3) providing the outer wall and is secured therein or thereto in an especially detachable manner. The inner cup (2) is produced from an at least fluid-tight plastic material.