The star ultimate windsor visco mattress is a high end mattress at a low end price the mattress will offer superb comfort and support as well as minimising any roll usually associated with lesser open coil mattresses features include 135 gauge open coil spring unit 15mm of v60 memory foam 6 gauge rod edge wire for greater edge to edge support generous layers of supportive fillings high quality damask quilted panel in stretch knit cool plus fabric no turn mattress one year manufacturer guar