You’ve been publishing these rankings for nearly a decade. Do you feel they’re genuinely changing behaviour in cotton sourcing, or are companies just learning how to look good on paper?
Tamar Hoek and Annemiek Smits: The sustainable cotton rankings from 2016, 2017, 2020, 2023 and now, along with the ongoing work of the Sustainable Cotton Hub, paint a picture of an industry in transition. There is clear progress from a dedicated group of leading companies, but a large portion of the industry has been slow to adopt sustainable practices. The persistent gap between the supply of and demand for sustainable cotton remains a key challenge for the entire sector.
Only 29 out of 100 brands disclose their total cotton use, and even fewer break down certification details. Why is something as basic as disclosure still a problem in 2025—are brands hiding, or do they simply lack control of their supply chains?
Tamar Hoek and Annemiek Smits: Throughout the cotton sector the common business model creates an uneven playing field. Companies aim to pay the lowest prices to suppliers while obtaining high-quality goods. As a result, unequal, short-sighted, and purely transactional relationships emerge. We believe this has a direct effect on the disclosure of cotton use as:
Many retailers and brands work through third-party agents to select and manage suppliers, meaning they do not have direct contact with their suppliers, let alone producers and workers. Suppliers themselves often sub-contract when capacity is low, further distancing the two ends of the value chain.
Many traceability efforts stop before they reach the farming stage, and therefore many retailers and brands are unfamiliar with the specific issues facing their producers. Complex sourcing and buying processes spread across departments working in silos. Companies work with hundreds of suppliers, using cotton grown by perhaps thousands of farmers and workers. They need to bring in significant capacity to create the needed transparency.
We believe that brands need to regain responsibility for their relationships with both suppliers and producers.
Adidas and Puma both claim close to 100% certified cotton, but cotton makes up only a fraction of their material mix. Doesn’t this expose how certification can be used as cover rather than proof of real progress?
Tamar Hoek and Annemiek Smits: That is exactly why we decided to extend the scope of the cotton ranking and included the percentage of cotton sourced compared to other materials in this ranking. We believe it is a good practice that Adidas and Puma source 100% certified cotton, but we also urge them to analyse the composition of their material mix and set new, achievable targets that ensure a higher proportion of natural fibres to synthetic.