Abstract: A patient care undersheet includes a minimum number of support points in order to keep a bedridden patient from developing decubitus ulcers. The undersheet preferably comprises a bottom layer having a number of conically shaped bubble-like supports and a top layer comprising a non-woven fabric. An adhesive material connects the non-woven fabric to the bubble-like supports in such a manner that under pressure the bubble-like supports under pressure do not move with respect to each other. The bubble-like supports are air tight so that the undersheet does not collapse under the pressure of a patient's body. The area of contact of the top of the bubble-like supports to the non-woven fabric is approximately 40% of the total top surface of the undersheet. A patient only has to move a very small distance before a new area of skin is supported by the undersheet.