What Is Spandex Fabric?

Spandex, also known as elastane or Lycra (a brand name), is a synthetic fiber known for its exceptional elasticity. It is a polyether-polyurea copolymer that was invented in 1958 by chemist Joseph Shivers at DuPont's Benger Laboratory. The name "spandex" is an anagram of the word "expands," which aptly describes the fabric's key characteristic.

Spandex fabric can be...