Market OverviewSpandex, also known as elastane or Lycra, is a synthetic fiber renowned for its exceptional elasticity. Derived from polyurethane, spandex is produced by reacting a diisocyanate with a diol or diamine, resulting in a polymer structure with urethane linkages that offer superior stretchability. Spandex fibers are essential in modern apparel, activewear, medical textiles, and...