Spandex, also known by its generic name lycra, is a synthetic fiber known for its exceptional elasticity. The development of spandex can be traced back to 1930 when DuPont scientist Sidney Jacobson began experimenting with polymers made of polyurethane. https://prateikcmi.livepositively.com/how-spandex-revolutionized-athletic-apparel-and-activewear-fashion/new=1