If getting in and out of an automobile is difficult due to back pain, sore hips or general weakness, then this 15 1/2" (40 cm) diameter cushion will provide a comforting solution. This transfer cushion takes pressure and strain off your hips and back. Your back remains straight while you simply swivel into position. The top section is padded with a comfortable polyfoam cushion with a removable cover for ease of cleaning. The plywood base gives rigid support on soft, non-supporting seats. Very lightweight with a carry handle for ease of transporting. Weight bearing load of 300 lb (136 kg).