With 1500 pocketed springs, the Relyon Pocket Ortho Memory Sapphire 1500 Mattress can respond to different areas of your body through individual springs, offering support exactly where it is needed. The springs are topped with a layer of 50mm memory foam which react to your body heat and mould to your individual shape. It also boasts Cool Comfort, a temperature and moisture regulator.This mattress further includes a soft layer of hypo allergenic reflex foam. The density and texture of both the memory and reflex foam layers achieves a supportive yet luxuriously comfortable sensationIt's no surprise that The Relyon Pocket Ortho Memory Sapphire 1500 Mattress was voted as WHICH? Best Buy mattress as it is beautifully crafted with the finest Belgian damask upholstery, stretch knit and a tufted finish, as well as three rows of side stitching to increase support, stability and longevityTo qualify as a WHICH? Best Buy Mattress, rigorous tests and measures are undertaken regarding:Body and spinal supportDurabilityEase of turningStabilityPermeability (Dealing with moisture)Ease of useThese tests simulate 10 years of mattress use and help you to choose a mattress that will feel just as comfortable in the future as it will on its first night of use.Please note: Spring count refers to a 5ft Kingsize model.