A sustainability report is written by the company it describes and is not usually audited to the standard of the financial statements. That does not make it useless. It makes it a document to read backwards: start with the scope, the baseline and the assurance statement, not with the page of numbers that went up.
The three most reliable tells are structural rather than rhetorical. A percentage reduction with no stated baseline year. A net zero target for 2050 with no interim target for 2030. A chart with no units on the vertical axis. Any one of those means the figures were chosen for their direction rather than their meaning.
The claims that commit to almost nothing
Common claims and what they actually assert
| Claim | What it asserts | What is missing |
|---|---|---|
| 100 percent of our cotton is more sustainable | A definition the company chose for itself | Which standard, at which threshold, at which processing stage |
| Carbon neutral across our operations | Offsets or renewable energy certificates against measured operational emissions | Supply chain emissions, which are the large majority in clothing |
| Made with recycled materials | Some recycled content, at some percentage | The percentage, the feedstock, and whether it was textile waste |
| Working towards net zero by 2050 | An intention | Interim targets and committed capital |
| Conscious or responsible collection | A product line | A standard, a metric or a verification of any kind |
| We diverted 4,000 tonnes of waste | Material left a waste stream at some point | Whether it was reused, downcycled, stored, or shipped abroad |
What the law now requires, and what is coming
Europe has moved faster than anywhere else, and it is changing what a claim can say. The EU's directive on empowering consumers for the green transition bans generic environmental claims that can't be substantiated, and requires environmental claims to be backed by evidence. According to the European Commission, it has applied since September 27, 2026. Related proposals go further, requiring an accredited verifier for most green claims and targeting carbon neutral claims built on offsetting.
The United Kingdom has approached it through enforcement rather than legislation. The competition regulator has published a green claims code and investigated large online fashion retailers over vague words such as "responsible." In the United States, the FTC's Green Guides remain the main reference. They're specific in places; an unqualified "recyclable" claim, for example, needs recycling facilities available to at least 60 percent of consumers where the item is sold.
- Generic words are the first casualty — Eco-friendly, green and sustainable are hard to substantiate for a garment, and enforcers in the United Kingdom and the European Union have said so. Expect specific claims with numbers attached instead.
- Offsetting-based neutrality is going — A claim of climate neutrality resting on purchased offsets is the target of the incoming European rules. Brands are renaming those pages rather than retiring them.
- Numbers need a home in a framework — Reports prepared against a recognized framework, with a scope statement and an assurance opinion, are harder to write selectively than a standalone brochure.
- Enforcement is still behind the rules — Regulators have limited capacity, and a misleading claim usually has to be reported before anything happens. The rules make a complaint easier, not automatic.
Where the inconvenient numbers live
Growth in production volume is usually excluded from the environmental section and available in the financial one, where unit volumes are reported for investors. If tons produced rose 8 percent while emissions per garment fell 4 percent, total emissions still rose. That reconciliation is almost never printed, and it is the most useful sum a reader can do. Regulators do act on this: in June 2022 the Norwegian Consumer Authority told the Sustainable Apparel Coalition, H&M and Norrøna that consumer-facing use of Higg data was potentially misleading.
The same applies to targets measured per unit rather than in absolute terms. An intensity target is met by making more things, which is why absolute figures are the ones to look for and the ones most often absent. Where one does appear, check whether it covers the whole group or one brand.
Six garments whose paperwork survives a close read
Each item makes a claim that a specific standard or a published number can be checked against. Prices are shown only where we confirmed them on the brand or retailer page in Oct 2026.
Best documentationNudie Jeans
Lofty Lo Organic Jeans
The repair figures are published annually as a count rather than a vague promise, which is the sort of number that is expensive to fake.
Check sold prices
Patagonia
Fleece Pullover, used
Worn Wear publishes repair volume and resale activity. A claim from a company that has reported for a decade is easier to check.
Check sold prices
Filippa K
Wool Coat
A short, named supply chain is a stronger signal than a certificate, because the list can be compared against the same list a year later.
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Veja
V-10 Leather Trainer
Publishing which tannery supplied which leather is a hard claim to make loosely. It also shows how much of the shoe is not covered.
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Organic Basics
Ten Pack Socks
A specific certification with a number you can look up beats any paragraph about sustainability. For socks, the certification is most of what there is.
Compare listingsSecondhand
Unbranded wool trousers
The garment with no sustainability page is often the most honest purchase available, because buying it used displaces new production without any offsetting story attached.
Compare listingsReading one in twenty minutes
- 1
Find the basis of preparation
Usually an appendix. It names the framework, the scope and the exclusions. Everything else in the report is read in the light of it.
- 2
Find the assurance statement
If an independent accountant has checked the numbers, the level is stated. Limited assurance is narrower than a financial audit.
- 3
Reconcile volume against emissions
Take the production figure and the intensity figure and multiply. If absolute emissions rose, that is the story, whatever the intensity chart shows.
- 4
Read the targets for interim years
A 2050 target without a 2030 milestone is a statement of intent rather than a plan.
- 5
Count the pages given to bad news
A report that gives space to what went wrong is more trustworthy than one that finds a win in every chapter.
