Lycra is INVISTA's trademark for a synthetic fabric material with elastic properties of the sort known generically as "spandex".

Lycra is commonly used in athletic or active clothing.

Lycra as a clothing material is fetishized by some people, perhaps on the basis that the garment forms a "second skin" that acts as a fetishistic surrogate for the wearer's own skin. This is known as lycra fetishism.

Lycra is normally one of the fabrics in leggings.