Spandex, Lycra or elastane, is a synthetic fiber known for its exceptional elasticity. It is stronger and more durable than rubber, its major non-synthetic competitor. It is a polyurethane-polyurea copolymer that was invented in 1959 by chemist Joseph Shivers at DuPont's Benger Laboratory in Waynesboro, Virginia. The material was patented by the Spanjian brothers—Robert and Richard—and was further used in their company, Spanjian Sportwear. When first introduced, it revolutionized many areas of the clothing industry.