The Back Sac lumbar support cushion is designed to fill the gap between your low back and a chair, or surface you are sitting onThe Back Sac uses an air bladder that intentionally contains a larger potential volume than the area it needs to support.When you place the BackSac in the curve of your low back or neck and sit or lie against it, it will become instantly pressurized, with the air that is inside flowing into your spinal curve.
The Back Sac is a unique back support cushion, designed by a physical therapist to better support your spine in any resting position. Because of its ability to adjust to fit all body shapes and sizes, the Back Sac can be used by anyone to improve posture and comfort!
Brand: Back Sac, Model: back sac, Color: Black