Seat with massaging apparatus and process for performing a massage

A seat, in particular for vehicles, comprises a massage device featuring a number of flexible and deformable containers (7, 8) forming bags (24a-c, 19a-c, 37a-c, 38a-d) connected to a control unit and to a pump (9); the bags are temporarily deformed by introducing and removing pressurised air into and from the bags one after the other to stimulate in succession different areas of the seat user's body.