The Pure Air 7 is a full replacement mattress system with a pressure redistribution surface giving optimum therapy for patients. It is suitable for patients up to very high risk of developing pressure ulcers or who have existing tissue damage. The welded, multi-stretch waterproof and vapour permeable cover ensures both patient comfort and hygiene standards are met. The Pure Air 7 replacement mattress also features a one in two cell-cycle design, giving optimum therapy to patients.