The multi-function Quad Cushion Pillow is perfect to relieve stress on your joints whether you are sitting, laying on your back or laying on your side. The versatility of the quad cushion pillow allows you to relieve pressure on your ankles, knees, neck and lower back, this is done by placing the pillow behind your knees while laying to relieve pressure on your lower back. The quad cushion’s rippled foam design also helps disperse pressure on your spine encouraging correct spinal alignment.