Item 12" Twin Tight Top Pocket Coil Mattress No Assembly Required 1 Year Limited Manufacturer Warranty Includes: One (1) twin mattress CertiPUr-US certified foam 696 Platinumrest pocket springs. Individually wrapped coils perfectly contour to each person, delivering personalized support Gel infused cooling memory foam provides cooling and comfort to your body giving you a better nights sleep that you deserve 360-degree foam encasement offers greater strength and support One (1) sided firm mattress Foam and fiber construction Federal fire retardant safety standard compliant Available in your choice of sizes