This is the White Noise grey bordered hybrid Longwave quilted spring mattress with a memory foam layer. It has at its centre the conventional 13.5 gauge open coil Bonnell spring unit. This has spring insulator pads, a polyester comfort layer, a layer of memory foam and then the Coltouch Longwave quilted top panel for an additional layer of softness. It comes with a modern grey quilted border and a medium soft to soft feel. To get the best from your new mattress, we recommend rotating it regularly from end to end. As this mattress is rolled up in a box for delivery, it does not come with side supports.