Skittles is a brand of fruit-flavoured sweets, currently produced and marketed by the Wm. Wrigley Jr. Company, a division of Mars, Inc. They have hard sugar shells which carry the letter S. The inside is mainly sugar, corn syrup, and hydrogenated palm kernel oil along with fruit juice, citric acid, and natural and artificial flavours. The confectionery has been sold in a variety of flavour collections, such as Tropical and Wild Berry. Skittles were first made commercially in 1974 by a British company. They were first introduced in North America in 1979 as an import confectionery. In 1982, domestic production of Skittles began in the United States. Skittles' "taste the rainbow" theme was created by New York ad agency D'Arcy Masius Benton & Bowles circa 1994.