King Koil

King Koil is a United States-based brand of mattresses and bedding that is spread across 80 countries. The company is based in Willowbrook, Illinois.

King Koil mattresses are designed and developed in cooperation with the International Chiropractors Association. These mattresses are sold at retail using several sub-brands including "World Luxury mattress", "iMattress", "Extended Life" and "Duck Dynasty".