Sleep Like Royalty! 👑 Comfort that cares. 4 elastic corner straps ensure a snug fit on any mattress. Urethane-coated nylon cover is both stain-resistant and waterproof. Innovative design promotes air circulation for a cooler sleep. Experience unparalleled support with our convoluted foam topper. Full-length gel bladders prevent bottoming out and pitting. Water-resistant & vapor permeable 34" wide for full coverage Pressure ulcer prevention The Drive Medical Premium Guard Gel Foam Overlay is a 34" wide mattress overlay designed to prevent and treat pressure ulcers. Featuring nylon gel bladders that cover the entire patient contact area, it minimizes bottoming out and pitting while enhancing comfort and air circulation. The overlay is secured with 4 elastic corner straps and boasts a water-resistant, vapor-permeable cover, making it both durable and easy to maintain.