Sealy's Comfort Series latex features latex as only Sealy can do it, Smart Latex. The Smart Latex featured in our Comfort Series beds provides a uniquely responsive comfort. Smart Latex is breathable support that doesn't sleep hot like many other specialty foams. Most of all, Smart Latex naturally offers pressure point relief in the areas where you need it most, like your shoulders, hips and knees. Pressure point relief insures that you will get the restful sleep you need. For the complete set you must order 1 of this item and 2 king box springs #41997 or 2 king low profile box springs #43997.