This orthopaedic mattress is based on a 12 1/2 gauge spring system with a rod edge. Together with generous paddings this helps to create a much firmer mattress. The Star Ortho Memory also features an attractive stitched border and a quilted top above a deep layer of memory foam which helps to reduce aches and pains and so provide a restful sleep. This mattress is ideal for thos who require a firm sleeping domain. The divan base comes with end or side storage in any combination.