The most characteristic North American fashion trend from the 1930s to 1945 was attention at the shoulder, with butterfly sleeves and banjo sleeves, and exaggerated shoulder pads for both men and women by the 1940s. The period also saw the first widespread use of man-made fibers, especially rayon for dresses and viscose for linings and lingerie, and synthetic nylon stockings. The zipper became widely used. These essentially U.S. developments were echoed, in varying degrees, in Britain and Europe.Suntans (called at the time "sunburns") became fashionable in the early 1930s, along with travel to the resorts along the Mediterranean, in the Bahamas, and on the east coast of Florida where one can acquire a tan, leading to new categories of clothes: white dinner jackets for men and beach pajama