The Fellowes Professional Series Ultimate Back Support helps to reduce tension associated with extended desk work with a two tiered back support system. A mid spinal support with memory foam cushion promotes good posture and a lower lumbar support with three memory foam sections conforms comfortably to the body's natural curvature. Suitable for use on most chairs, this black back support also features a tri-tensioning attachment for a fixed position without the need to re-adjust. Full back support 3 memory foam sections conform to the body's natural curvature Tri-tensioning attachment For use on most chairs Colour: Black