In any case, Spandex and Lycra are one and the same thing, no matter which one of these two brand names you prefer to use. So, in the imaginary battle called
Lycra vs Spandex vs Elastane: What is the Difference?
COMPARISON OF SPANDEX WITH RUBBER – Inviya Fibre
Elastane VS Spandex: What's the Difference? - The Eco Hub
Spandex and Stretch (How to select the fabric for elasticity
Elastane - Spandex - Lycra - What's the difference? — Aplomb Dancewear
Comparison of spandex, Lycra, and nylon in detail.
Elastane vs. Spandex: A Complete Comparison Guide
Guide to Cotton, Polyester, and Blended Fabrics
Elastane vs Spandex vs Lycra What is the Difference
Spandex vs. Nylon: Which Is Better?
Spandex Fabric Vs. Lycra®, Fabric Knowledge
Spandex Vs Elastane In Leggings
Difference Between Lycra and Neoprene
Different Types of Spandex and Application