8" Nature's Sleep Jamaica Premium Visco Memory Foam Mattress - Queen Size 3" 4.6 lbs. Density Proprietary Natures Sleep Next Generation Visco Memory Foam 5" High Density Foam Core For Medium Firmess And Great Back Support Allergen-Resistant Removable And Washable Cover With Non-Skid Bottom 20 Year Warranty Great For Those With Fibromyalgia, Arthritis, Back Pain and Discomfort