Item 9.25" California King Euro Top Innerspring Mattress No Assembly Required 1 Year Limited Manufacturer Warranty Includes: One (1) California king mattress CertiPUr-US certified foam 460 Verticoil Elite innerspring resilient design fully supports your body weight and natural body movements 360-degree foam encasement offers greater strength and support One (1) sided Euro top mattress Foam and fiber construction Federal fire retardant safety standard compliant Available in your choice of sizes