9" ComfortCoil #708 queen black duct futon mattress features a custom-designed supercenter innerspring unit, high resiliency foam, and cotton construction with 100% polyester fabric covering.With dimensions of 60" x 80" and a medium firm surface feel, this innerspring futon mattress provides exceptional comfort and support. The ComfortCoil features an American made 312 coil innerspring unit with a 13.5 gauge bonnel spring unit, two pieces of foam, and 30 lbs of Gold Bond Joy cotton batting.Designed with Gold Bond's best selling product in mind, this futon mattress offers the most comfortable innerspring futon mattress available. The mattress easily folds into any futon frame and is available in various sizes and colors.