ProtektSerenity Gel Overlay 4200B - 42" x 78" x 4" - 90002 Features:Optimal overlay surface for the prevention and treatment of pressure ulcers.Convoluted high density polyurethane foam top layer.Bladders contain an aqueous gel composition that provides deep submersion.Base foundation is a high density high resilient foam construction which prevents "bottoming out".Cover is a soft nylon urethane coated vapor permeable water proof fabric.Top cover is non-shear, low-friction, and anti-microbial/bacterial.4 elastic corner straps secures overlay to mattress.Gel maintains room temperature at all times.Bariatric sizes available.16 CFR part 1632 & 1633.Weight capacity: 300 lbs.Size: 34" x 78" x 3.5"Warranty: one year non-prorated. Product Specifications BRANDProactive Medical MANUFACTURERS PART NUMBER90002 LENGTH INCHES78 WIDTH INCHES42 HEIGHT INCHES4 DESCRIPTIONProtektSerenity Gel Overlay 4200B WEIGHT CAPACITY300 lbs TYPEGel Overlay PACKAGE QUANTITY1 LIMITED WARRANTY1 Year