Introducing the NEW 10-inch Twin XL (extra long) Cool GEL 4lb Density Memory Foam Mattress taking memory foam comfort to the next generation! Made with 3-layer construction: 3"Gel Foam, 2"Comfort Foam Support, 5" High density foam for ultimate support base! Infused gel beads into premium memory foam; provides the ultimate solution, combining comfort, support pressure relief and improved airflow for a cooler night's sleep! Comps to name brands! Comforting rating: Firm. Mattress Only! Foundation not included. Twin XL size: W38" x L80" x H10".