Abstract: A patient support system for holding the torso and head of a user upright when sitting in a wheel chair or a chair to prevent the user from falling off of the wheel chair or chair. The patient support system includes a vest harness designed for wear on the torso of a patient user. The vest harness has a neck opening, a pair of shoulder straps, a pair of side regions and a lower edge defining a lower opening. The vest harness has breaks through each of the shoulder straps and slits through each of the side regions of vest harness to define separable front and back portions of the vest harness. The front and back portions are detachably coupled together at the breaks of each of the shoulder straps and along the slits of each of the side regions. A chair structure is provided having a backrest and a seat. The back portion of the vest harness is detachably attachable to the backrest of the chair structure to help hold a patient user upright in the chair structure.