Its no surprise that the relyon pocket ortho memory sapphire 1500 mattress was awarded a which best buy 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 longevitywith 1500 pocketed springs it 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