Harley: Designer Coccyx Seat Wedge HL4023. Memory foam filled seat wedge, providing an 8 degree sitting angle designed to restore the natural ‘S’ curve of the spine. The Coccyx area of the wedge is cut out to produce less pressure on the base of the spine, to specifically help sufferers of lower back pain. Memory foam conforms to your body as you sit down…as if it was made especially for you, dissipates heat and stimulates circulation, providing unrivalled comfort. The pressure absorbing properties of the memory foam relieve pain making sitting for long periods of time in the office or at home more comfortable.