The Tamesis
Stripe & Stare has been disclosing its production for two years. This fast-growing underwear brand will produce 325,560 pieces in 2023 and 435,312 pieces in 2024.Photo: Anne Reid
Likewise, Ginger said, Finisterre’s production total was also a quick process. “You can make it overly complex, but it doesn’t need to be forensic accounting,” she said. “I just pulled up last year’s purchase orders and added them up. It took two minutes.”
Recent signatories include British leather goods brand Mulberry, which published production figures for the first time in its 2024/25 Impact Report, noting that it is “following in the footsteps of our B Corps”. Rosie Wollacott, Head of Sustainability said fashion business The company hopes other brands will join Mulberry so the industry can “address real issues around textile waste, fashion value and responsibility”.
According to the report, Mulberry produced 191,795 units in 2024. “Using data from our planning team, we calculated the total number of pieces produced throughout the year and broke it down by manufacturing country,” says Wollacott. “This is information we already track when measuring our global carbon footprint, so we don’t need to create any new processes to share it.”
Larger brands with complex global supply chains led by siled teams may have a harder time collecting data, but it’s not impossible, Arthur said. “The data exists, but it’s often fragmented across suppliers, regions and systems, making aggregation challenging. As with many efforts in sustainability, this depends as much on political will as it does on technical capability.” But it’s not impossible: Brands such as Adidas, Lululemon and Mango have all shared output in the past. For example, in 2022, Adidas produced 419 million pairs of shoes and 482 million pieces of clothing, while Lululemon produced 141 million pieces and Mango 155 million pieces. (No one responded to a request for comment.)
Disclosing volumes is not part of the B Corp certification process, but a growing number of brands that sign Speak Volumes are B Corp, including Mulberry, Finisterre and Stripe & Stare.Photo: Finisterre
Can policy drive momentum?
Ricketts said one of the biggest barriers for brands to participate in the campaign is the lack of a level playing field. If every brand had to disclose its production volume, the data would be easier for customers and policymakers to understand, and the stakes wouldn’t be as high. In theory, this is a problem that regulation could address, but policymakers have been reluctant to engage in such overt market intervention. This may not always be the case.
