Twin Size 8 Inch Thick, 4 Pound Density Visco Elastic Memory Foam Mattress Bed With Gel Made in the USA Includes 1/2 inch of Gel Memory Foam for cooling and 3 inches of 4 pound density memory foam which instantly makes sleeping more restful, comfortable, and supportive similar to zero gravity. 36 x 73 x 8 with 3 inches of 4 lb memory foam and 1/2 an inch of Gel conforms to your body perfectly, 4.5 inches of high resilence base Made in the USA using enviromentally friendly processes. PURGreen Certified Memory foam reduces pressure points that cause you to toss and turn, so you sleep betterand Gel Memory Foam adds cooling prperties. Mattress features 3 inches of four-pound density with the famous cooling effect of Gel and the Gel-like feel.