Sleep Shop Aerated 3-Inch Memory Foam Topper with Non Skid Bottom and Elastic Securing Straps, TwinXL One sided 3-Inch memory foam topper covered in luxurious soft stretch knit fabric Topper is made with 3-Inch of a special aerated memory foam for coolness and comfort Made with top qaulity 4-Pound memory foam to provide lasting support at fraction of mattress cost Topper is covered with a luxuriously soft stretch knit fabric and a non skid bottom Includes adjustable elastic straps for the perfect secure fit on any mattress; Twin Size 37 by 74 by 4