Abstract: A harness for maintaining erect posture of a person seated in a chair. The harness includes an anchoring strap which encircles the seatback of the chair and a supporting strap which encircles the torso of the person seated in the chair. The supporting strap comprises two separate straps fastened respectively at the right and left sides of the anchoring strap. The two straps meet in front of the seated person and are buckled together. Apart from the buckle, all straps are secured in their operative locations by frictional engagement, thereby avoiding rivets, stitching, buttons, snaps, or other fasteners which penetrate or otherwise disturb the snaps. Optionally, the constituent straps of the supporting strap have elastic sections, for resistably yielding to the person when the person inclines his or her torso. Also optional is a cushioned cover for covering the buckle, to avoid discomfort to the seated person.

Abstract: A device for retaining the user in a substantially upright position when seated in a chair is disclosed. The device consists of a bracket attached to the back of the chair having two distal ends, the ends extending laterally outward from the back support portion of the chair. Attached to these distal ends is an adjustable, padded strap that supports the abdomen of the person seated in the chair to prevent them from slouching or leaning forward. The strap extends perpendicular to the rear strut or frame of the chair to hold the user firmly in an upright position.