Kwai Chi reviews the Ergoflex mattress who are a massive online competitor to the Tempur mattress. You can buy directly online from www.ergoflex.co.uk http Viscoelastic memory foam material was originally designed by NASA for use in space, but after NASA abandoned it, Fagerdala World Foams, a Swedish technical foam firm, picked up the idea and made it into a mattress. A company called Tempur-Pedic was founded in 1992 by Robert B. Trussell, Jr. after he was introduced to the viscoelastic …