Pressure Relieving Properties ‘Open cell’ visco elastic foam that moulds around the contours of the patients body supporting the weight of the patient over a much larger area, thus lowering the interface pressure for greater pressure relieving properties. Lightweight Mattress The weight of the new mattresses has been significantly reduced, therefore they are easier to lift and attach to the operating table. Improved Durability Reinforced mattress sockets to reduce the risk of split mattresses. Reinforced mattress skin reduces the likelihood of rips and tears. Breather ports allow for a smooth mattress surface. Consistent quality finish throughout.