Materials

What a fiber label tells us, what it leaves out, and how to read a material claim.

A label is a starting point

A fiber label tells you composition. It does not tell you where the fiber came from, what happened during processing, which electricity powered a mill, how a worker was treated, or how many times a garment will be worn. Those missing details are often central to an environmental or social claim.

Compare like with like

Questions worth asking include: what is the fiber source, what processing was used, what is the product designed to do, and how long is it expected to last? An assessment that compares one kilogram of fibers is different from one that compares garments delivering the same years of use.

UNEP’s Global Stocktaking examines environmental and social impacts across the textile value chain. Different stages matter for different impacts, so a material label alone cannot describe a finished product’s performance.

Three useful checks

  • Trace the claim to its actual certificate, study, or supply chain record.
  • Check whether it covers a fiber, a facility, or the finished product.
  • Look for tradeoffs and missing stages, especially dyeing, finishing, and use.

Explore Asian textile traditions

These guides look at how cloth is made, the knowledge behind its patterns, and the evidence needed to understand material and production claims.

Sources

Next: keeping garments useful.