3-Inch Visco Elastic Memory Foam  Mattress Topper, King Innovative mattress topper designed to reduce nighttime tossing and turning Made of visco-elastic memory foam; contours to the body and relieves pressure points Temperature-smart, open-cell foam adjusts to keep you warm Measures 76 x 77 x 3 inches; 2-1/2 pounds per cubic foot density Hypo-allergenic; made in the USA; spot clean as needed