2&rdquo; Ventilated Memory Foam Mattress Toppers by Abripedic (Twin) 2-inch Ventilated memory foam mattress topper by Abripedic. Constructed of high-density memory foam, this mattress topper will cradle your body and reduce pressure points to prevent tossing and turning. 3 year warranty. Twin: 38 inches wide x 75 inches long , Twin XL : 38 inches x 80 inches long Full: 53 inches wide x 75 inches long, Queen: 60 inches wide x 80 inches long, King: 76 inches wide x 80 inches long, California king: 72 inches wide x 84 inches long ****This item does not come with a cover****