SSB Manufacturing Company (doing business as Simmons Bedding) sleeps tight as one of the world's largest mattress makers alongside rival Sealy. Founded by Zalmon Simmons in 1870, the company makes mattresses and accessories at several price points for a variety of consumers looking for luxury, eco-friendly, and memory-foam products. It makes products under the Beautyrest, BeautySleep, ComforPedic, Natural Care, and Simmons labels. Simmons Bedding sells its products in North America through more than 15,500 furniture outlets, department stores, and specialty shops. The mattress company also operates a handful of World of Sleep shops. Simmons Bedding its majority owned by Boston-based Advent International.