Mattress Overlay with Cover Cover Material Vinyl / Nylon Cover Dimensions 3-1/2 X 35 X 80 For Use With Geo Matt Therapeutic Overlays HCPCS E0199 (Disclaimer) Material Foam Type Therapeutic UNSPSC Code 42141704 Weight Capacity 250 lbs. The patented 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 Geo-Matts exclusive Ring-of-Air feature helps to ventilate the surface, channeling heat away from the patient to minimize perspiration build-up The bacteriostatic top fabric is fire resistant, fluidproof, tear resistant, cleanable, and replaceable