What is the difference between spandex and Lycra fibers?

Spandex and Lycra are actually the same type of synthetic fiber, known for its exceptional elasticity. The difference lies in the branding.

Spandex is a generic term used to describe this type of synthetic fiber that is known for its exceptional elasticity. The name "spandex" is an anagram of the word "expands," which signifies its most significant characteristic: high elasticity.

Lycra, on the other hand, is a brand name for spandex that is owned by the Swiss company Invista, a subsidiary of Koch Industries. The company has gone to great lengths to distinguish Lycra as a high-quality version of spandex. Lycra was invented and patented in 1958 by chemist Joseph Shivers at DuPont's Benger Laboratory in Waynesboro, Virginia.

Despite being the same type of fiber, the terms are often used interchangeably. When you see the term Lycra, it's referring to a higher-end, branded version of spandex. Both materials are known for stretching up to 500% of their original size and returning to their original shape, making them popular for use in athletic wear, swimwear, and other form-fitting garments.