Serta 2.5-Inch Queen Gel-Memory Foam Mattress Topper Serta 2.5-inch Queen size gel infused memory foam mattress topper with deluxe 100% Egyptian cotton cover Infused gel beads distribute heat to ensure the optimal sleep temperature. Fall asleep faster, sleep deeper, and wake up feeling refreshed and rejuvenated Patented gel formulation plus premium Serta memory foam; prevents tossing and turning Includes removable and washable 100% Egyptian cotton stretch-to-fit cover for breathability and softness Topper measures 60 inches wide by 80 inches long by 2.5 inches deep