Linenspa 6 Inch Innerspring Mattress - King Heavy-gauge tempered steel coils provide a firm mattress with exceptional support and durability perfect for a kids room, guest beds, or an affordable low-profile option Fire resistant barrier meets flammability standards and helps keep your loved ones safe while they sleep Quilted fabric cover and foam layer offers a layer of top cushioning for increased comfort Mattress comes compressed and rolled for shipping and setup so easy your kids can help King mattress measures 76 inches by 80 inches; 10-year U.S. warranty