Lycra is the trademarked brand name for spandex, a synthetic fibre that can be stretched to several times its original size but retain its shape. It has been a staple of the womenswear market for decades, particularly undergarments. It has become a common material found in all types of garments. Its ability to wick away moisture from the body, along with its flexibility, has made it a particularly popular choice for exercise and workout apparel.