Visco Therapy HL 2000 Single Coolmax Memory Foam Mattress. 5cm visco memory foam & high density foam underneath for the best possible support also orthopaedic properties help blood to flow & circulate freely, preventing the nerves & muscles from numbing. Comes with a special coolmax zip-off washable cover that allows the air to flow freely through the fabric & the core of the mattress, keeping you dry & cool & preventing moisture buildup.