Since 1898 King Koil mattresses offer a remarkable level of value without sacrificing quality or craftsmanship. With 100-plus years of engineering innovation and manufacturing expertise, there has been one true constant ? providing people the world over with a more restful sleep. The collection utilizes some of the finest materials available, including premium innerspring construction for enhanced support, a firm perimeter edge and specially designed foams for superior comfort. Additionally, King Koil is the only innerspring mattress collection endorsed by The Foundation for Chiropractic Education and Research (FCER). King Koil mattresses provide the sleep experience you want at a price t