The tumbler consists of a machine frame with four gearmotor driven supporting wheels holding the drum. The friction between the massaging drum and wheels turns the drum. Additional drums can increase the overall capacity, making it an economical means of expanding production capabilities gradually with a minor investment. The massage drums can be removed from the unit and placed in cooling rooms with the products still under vacuum. Wheels on the massage drums allow them to be used as storage or transport containers, with meat to be stored under vacuum until it is emptied. Avoiding contamination from the surroundings improves product quality. The drum can maintain up to 95% vacuum and can be connected to continuous vacuum if required.