Bellows both for the transition between two vehicles with a jointed connection as well as an aircraft passenger boarding bridge or staircase

The bellows have a bellows material with a coating, where the material of the bellows has a printed protective layer as coating. The protective layer is applied in digital printing process, such as in ink jet process. The bellows have multiple bellows frames arranged in series. The bellows material has a reinforcing material. The coating consists of an elastomer.