Memory foam: Aims to relieve your body’s pressure points. Support: 13.5 gauge open coil bonnell spring for added support. Mattress: Treat yourself to a new memory foam mattress. Sizes: Available in 2ft 6, 3ft, 4ft, 4ft 6, 5ft & 6ft. Hygienic: Hypo-allergenic and dust mite resistant. Comfort: Adapts to your natural body shape.