Simmons Beautyrest Exceptionale Whitecliff Plush Mattress, King Two-Story Coil-on-Coil construction features 1960 Density Pocketed Coil springs for the ultimate in custom conformability and our highest degree of motion separation Natural Latex and Premium Foams which have gone through the newly patented Transflexion Comfort Technology process ensuring that the bed will feel consistently comfortable throughout the life of the mattress Total Surround BeautyEdge Foam Encasement featuring QuantumLock for foam rail integrity and sleeping comfort right to the edge Luxurious BeautyStyle fabrics and aesthetics compliment the sleep surface while AirFeel foam quilting and other upholstery PurFoams enhance the inherent comfort of the Pocketed Coil springs