The body balance memory support 500 mattress is an excellent choice for divan bases or regular bed frames alike the 20cm deep mattress features a zip off cover protecting the innovative surface belowthe 5cm of egg profiling on this foam mattress can help ensure a good nightrsquos sleep also called convoluted foam the mattress is covered in egg shaped bumps that provide a soft sleeping surface that promotes air circulationthe foamrsquos peak and valley design can improve blood flow by de