The #1 selling therapeutic overlay in the US, Geo-Matt is used by thousands of hospitals and nursing homes nationwide. It has been proven effective in clinical trials and studies as an aid in the prevention and treatment of pressure ulcers.The top surface is cut using our exclusive Geo-Matt design, which creates more than 800 individually responsive foam cells that are anatomically sized to the area of the body they carry. This zoned design delivers the ideal support characteristics needed at the head, torso, and lower extremities. By independently absorbing pressure points, the cells allow the Geo-Matt to customize its support to the body's natural curvature while minimizing the effects of pressure and shearing. In addition, Geo-Matt's exclusive "Ring-of-Air " feature helps to ventilate the surface, channeling heat away from the patient to minimize perspiration build-up.GeoMatt Cut Foam Top: The Geo-Matt style foam topper is a high density, medical grade foam. The unique geometric design consists of over 800 individual cells, each of which acts individually to redistribute pressure, to reduce heat and moisture buildup on the skin, and to reduce shear to underlying tissues. This foam overlay is 3.5 in height.Upper head section and lower foot section: Cells are smaller at the head and foot section to disperse pressure over these sensitive areas.Body Section: Cells are larger to provide pressure dispersion over the torso.Inset of Geo-Matt Close-Up: The unique Ring-of-Air performs several functions. It allows each cell to act individually to conform to the body. It assists in removing heat and moisture from the body by channeling heat and vapor away. And it reduces shearing by allowing the individual cells to move independently, reducing pull on the skin.SpecificationsWeight Limit: 250 lbsStandard Sizes: Full (Double - 52"W x 72"L); Queen (58"W x 75"L) & King (74"W x 75"L)1 Each / Each