Simmons Visco Mattress: * World Class Top of the Line * 980 coils, Foam encased perimeter * "Bowling Ball" drop test unsurpassed motion separation * Several layers of high-performance and convoluted foams, plus Celestra * Contains: 1"" block foam, 1.5"" firm foam, 1.5"" convoluted foam, 5/8"" visco and 1.25-oz. fire-retardant fiber * Super pocketed coils * Foam-encased edge support * Coil counts: 1260 King, 980 Queen, 825 Full and 594 Twin * Includes a box spring