Formerly Tempur-Pedic, Tempur Sealy International manufactures premium, pressure-relieving, temperature-sensitive mattresses, pillows, and other sleep products made from viscoelastic foam technology developed by NASA during the 1970s to help cushion astronauts during liftoff. Its TEMPUR, Sealy, Optimum, and Stearns & Foster brands are sold in 100-plus countries through three distribution channels: retail (furniture and department stores), direct (online and company-owned stores), and other means (third-party distributors, hospitals and medical retailers). Amid declining sales in 2013, Tempur-Pedic bought Sealy to become Tempur Sealy.