King Koil is a United States-based brand of mattresses and bedding with 60 factories in 40 countries operated by independent licensees. It was founded by Samuel Bronstein in 1898 in Saint Paul, Minnesota. The company is now based in Willowbrook, Illinois. In 2005 it adopted the name Comfort Solutions. King Koil mattresses are sold in various furniture/mattress stores around the country.
It advertises its products as endorsed by the Foundation for Chiropractic Education and Research.