Abstract: A combined swimming aid and lifesaving device in which a buoyant harness for encircling the swimmer's torso comprises a plurality of releasably interconnected portions for selective use of one or more parts of the harness to obtain desired buoyancy, and a plurality of separate inflatable buoyant devices are releasably attached to the harness at spaced locations thereon to impart greater or lesser buoyancy to the device for providing desired buoyant support to the swimmer to maintain the swimmer in horizontal position in the water. Attaching points are on the harness for securing a lifeline thereto, and the inflatable buoyant devices remain slack when inflated so that they are able to undulate during use to reduce drag through the water.