Our memory foam mattress Features: 1) 100% cotton cover, allows proper lows proper circulation of air around your body, dust mite resistant, non allergenic; 2) 3" of 5.3lb density NASA engineered viscoelastic memory foam; 3) Evenly distributes and absorbs weight to help relieve body pressure; 4) Contours perfectly and molds to your body; 5) Superior pressure relief reduces back pain; 6) Created correct spinal alignment; 7) Promotes deep REM sleep; 8) Relives joint and neck pain. Base Foam Support System: 1) Extra firm support 2) Never sags or needs turning 3) Superior formulation for unsurpassed durability 4) Highly resistant against body impressions 5) Guaranteed to never flatten out Packing: vacuum packed mattress: 37 x 37cm.