Sanctuary Sleep Products Flotation Wood Frame Waterbed mattresses are designed with over 30 years of experience offering superior performance, problem free durability and the features and comfort demanded from a world class sleep product. Highly visible 4-Ply Duralife Corner Guards, Eeezy Burp Air Release Valve, Extra Lumbar Support, Tethered Interiors, Hand Tied & Strapped Fibers, Low Tension Tops and U.S.A. Vinyl and construction...SACRIFICE NOTHING!