Elastane fabric, also known as spandex or Lycra, is a synthetic fiber that is characterized by its high elasticity and stretchability. It is often used in combination with other fibers to create stretchy clothing and is used in a variety of garments, including athletic wear, swimwear, and denim. Elastane is primarily made from polyurethane, which is derived from non-renewable raw materials such as crude oil and natural gas. It is not biodegradable, and its environmental impact is a growing concern in the fashion industry.
Elastane is rarely used alone and is usually blended with other fabrics like cotton, polyester, and nylon to create clothes that balance elasticity with other desired qualities like softness, breathability, and toughness. The proportion of elastane in fabrics is usually less than 30 percent and endows cotton fabrics, for example, with stretchy capabilities.
Some common fabrics that use elastane include stretch denim, synthetic lace, swimwear, and stretch woven and knit fabrics. Elastane is used in fabrics where stretch, flexibility, and comfort are important.