Europe ’s used clothing travels much farther than trade statistics can reliably follow—leaving exporters with limited visibility into whether garments are ultimately resold, recycled or discarded.

A new study from sustainability consultancy Eunomia Research & Consulting and Norwegian consultancy Mepex tracked 200 discarded clothing items from five Nordic countries through international secondhand textile supply chains, documenting journeys across 23 countries and exposing significant gaps in what happens after garments leave their initial sorting destinations.

The research found that 71 percent of tracked garments had their last recorded location in Europe , with Poland accounting for 30 percent and Slovakia for 18 percent. Pakistan was the third-largest recorded destination, receiving 14 percent of the sample. Other garments traveled to countries across Africa, Asia and the Middle East.

Researchers tracked 200 discarded textile items from five Nordic countries through international supply chains.…