An inner wall lining of the bellows of a connection between two hinge-linked vehicles or vehicle parts is provided, the inner wall lining including several wall elements that are disposed within the connection so as to be slidabic relative to each other via a guide device, the guide device including at least one guide arn that is disposed on the one wall element and is oriented parallel to and at a distance of said wall element, the guide arm slidably receiving the other wall element, the distance between the one wall element and the guide arm corresponding approximately to the thickness of the other wall element.