Spandex is a synthetic fiber containing a maximum of about 85% segmented polyurethane and known for its high elasticity with an elongation capacity of approximately 600%.
The Fiber Named Spandex, Lycra Or Elastane
Spandex Simplified: Sewing for Superheroes: Porter, Marie, Porter
Woven Four Way Elastic Stretch Structure Textured Polyester
Spandex Fiber: An Elastic Marvel - Textile Explainer
Spandex - Wikipedia
Spandex Fiber: An Elastic Marvel - Textile Explainer
Spandex Fiber: An Elastic Marvel - Textile Explainer
Textile Explainer
Spandex Fiber: An Elastic Marvel - Textile Explainer
Breathable Soft Dry-Fit Wrinkle Resistant Elastic 4 Way Stretch
What is Spandex Fabric: Properties, How its Made and Where