Mattress Firm is one of the leading specialty mattress retailers in the United States that offers a selection of brand name products. Headquartered in Houston, the company operates more than 500 locations in over 20 U.S. states. Mattress Firm offers products from several brands, including Sealy, Simmons, Sleep Number, Tempur-Pedic and Stearns & Foster. In addition, the company offers a variety of accessories, including neck pillows and instamatic bed frames. Mattress Firm has been operational since 1986 and maintains a location in Phoenix.