Sanctuary SF 4 LS Espree Hardside Waterbed. Sanctuary Sleep Products Flotation Wood Frame Watermattresses 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! Features and Benefits:4-6-4 Hydro-Lift Edge: Edge & Tethered Fiber Support Retains The Fibers Integrity While Offering Better Wave Control & Head To Foot Support, Made with extra durable 20 MIL thickness vinyl, 4-Ply Duralife Corner Guards Increase Corner Strength & Longer Mattress Life, Mid-Body Support Provides Added Support Where The Body Needs It Most – Between The Shoulder & Hips, Eeezy Burp Air Release Valve Eliminates Air Bubbles When Filling The Mattress, Multiple Zone Feather Vacuum Formed Top, 20 Mil Ultra Plasticized Vinyl Is Specially Formulated Using Premium Grade Plasticizers, Specially Formulated Heat Resistant & Fully Encased Vinyl Bottom. Made In The U.S.A. Highest Quality Standards In The World. 20 Year Warranty Coverage Ensures Superior Quality With The Ability To Back It Up. Available Sizes: Super Single, Queen, King. Buy this hardside waterbed as a bundle and save! The Good / Basic Package: Premium Stand-up Liner, Quantum Analog Solid State Hardside Waterbed Heater, Innomax Fill & Drain Kit