Three names, one confusing shopping experience: a fabric tag says “elastane,” a friend’s leggings say “spandex,” and a third pair is advertised as “made with Lycra.” Are these different materials, or the same thing marketed three ways? Here’s the actual answer.

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Elastane and spandex: the same fiber, different regions

Elastane and spandex refer to the exact same synthetic fiber. “Spandex” is the common term in North America — it’s actually an anagram of the word “expands” — while “elastane” is the standard name used in Europe and most other regions. If a garment tag says spandex in the US and the identical fabric is labeled elastane in Finland, nothing about the fiber itself has changed; only the regional naming convention has.

Lycra: a brand name, not a separate material

Lycra is different from the other two in one specific way: it’s a registered trademark, not a generic material name. DuPont, the company that invented the fiber, trademarked their specific version as “Lycra” to distinguish it from generic competitors — the same relationship as Kleenex to tissues, or Velcro to hook-and-loop fasteners. All Lycra is spandex/elastane, but not all spandex/elastane is Lycra, since plenty of manufacturers produce the fiber generically without that brand license.

Does the brand name actually mean anything for quality?

In practical terms, yes, to a degree — branded Lycra typically comes with the trademark holder’s own quality controls and consistency standards, which can translate to slightly better stretch retention or longevity compared to an unbranded generic spandex fiber. That said, “generic” doesn’t mean low-quality; a well-manufactured spandex blend from any source can perform well, and the percentage of spandex/elastane in a fabric blend matters more for stretch and recovery than which specific brand supplied it.

What this means when you’re reading a label

• “73% recycled polyester, 27% elastane” and “73% recycled polyester, 27% spandex” describe an identical fabric composition — just written with the regional term for the stretch fiber.
• “Made with Lycra” tells you the specific branded fiber was used, which can be a genuine quality signal, but its absence doesn’t mean a fabric uses an inferior stretch fiber — most activewear brands simply use generic spandex/elastane without licensing the trademark.
• The percentage matters more than the name. A garment with 27% spandex will generally have more stretch and recovery than one with 10%, regardless of whether that spandex is branded or generic.

Where Njálla fits in

Our leggings, tops, and sports bras are made from roughly 73% recycled polyester and 27% spandex — the same fiber you’d see labeled “elastane” on a European tag. We list the specific percentage because that number tells you more about how the fabric will actually perform than any brand name would.

Frequently Asked Questions

If a label says “elastane,” does that mean it’s not Lycra?

Not necessarily — it depends on whether the manufacturer used branded Lycra fiber or a generic elastane/spandex fiber. “Elastane” is just the regional term for the fiber category; it doesn’t by itself indicate the brand.

Is Lycra always better quality than generic spandex?

Branded Lycra comes with the trademark holder’s consistency standards, which can mean slightly better stretch retention, but a well-manufactured generic spandex blend can still perform very well — the percentage of stretch fiber in the blend usually matters more than the brand.

Why do some countries use “spandex” and others use “elastane”?

It’s simply a difference in regional naming convention that developed after the fiber’s invention — spandex became the standard term in North America, while elastane became standard in Europe and most other regions, even though both refer to the identical material.

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