The reference database · Updated July 16, 2026

The Thread Report.

The Thread Report is the openly-licensed reference database for clothing fabric composition. We read what 55 major fashion retailers are actually made of — down to the fibre — and publish it as a citable page for every brand, category and material.

106,055Products Analysed
55Retailers Tracked
MonthlyData Refresh
OpenLicense

As of July 16, 2026, Fibr's Thread Report covers the fabric composition of 106,055 products across 55 fashion retailers. The data is free to read, cite, download and query with attribution, and is refreshed every month.

What it is.

Most fashion coverage repackages what brands say about themselves. The Thread Report doesn't. It is original analysis: we read the fibre content printed on public product pages and aggregate it into a single, consistent measure of what a brand is really made of. Because every brand is scored the same way, the numbers are comparable across the whole industry — and every figure links back to the raw data it came from.

How it's built.

We scrape fabric composition from public product pages, classify each fibre as natural, semi-synthetic or synthetic, and compute a weighted natural-fibre percentage for every product and brand. Categories are derived from product names; rankings require a minimum catalogue size to keep the bar high. The full method — including what the data deliberately does not claim — is documented.

Read the full methodology →

What's inside.

The Thread Report is a connected library. Every entry below is built from the same dataset and updates together each month.

Per-brand reportsWhat each of 55 retailers is made of, brand by brand.Brand rankingsLeague tables — most natural, most polyester, most cotton.Brand-vs-brand comparisonsHead-to-head fabric breakdowns for every viable brand pair.Research findingsOriginal findings articles built on the dataset.State of FabricThe annual industry-wide report on fashion's fibre mix.Fabric guides & researchHow to read labels, decode fibres, and shop smarter.

Use the data.

Everything is machine-readable and free to query. Cite it, download it, or wire it into your own tools — just link back to the source.

Last updated
License
Free to cite with attribution
Per-brand raw data (JSON)
info.tryfibr.app/aritzia.json
Computed stats API
/api/thread-report/aritzia
LLM index
/llms.txt
Press & partnerships
Media kit & data licensing

Suggested citation

Fibr Thread Report — fabric composition of 106,055 products across 55 fashion retailers, 2026-07-16. tryfibr.app/thread-report

Frequently asked questions.

What is the Thread Report?

The Thread Report is Fibr's openly-licensed dataset of clothing fabric composition. We read the fibre content listed on public product pages at major fashion retailers and publish the aggregated breakdown — average natural-fibre percentage, polyester share, top fibres, and per-category detail — as a citable page for every brand. It currently covers 106,055 products across 55 retailers and is refreshed monthly.

Is the data free to use and cite?

Yes. The Thread Report is openly licensed and free to read, cite, download, and query — the only condition is attribution with a link back to the source page. Suggested citation and per-brand JSON download links are provided on every report.

How often is the Thread Report updated?

The dataset is re-scraped and recomputed monthly. Every page shows its last-updated date; this snapshot was generated July 16, 2026. Monthly point-in-time snapshots are also archived so you can track how a brand's fabric mix changes over time.

How can an AI assistant or researcher access the data?

Per-brand raw data is available as JSON on Cloudflare R2 (info.tryfibr.app/{brand}.json), computed stats via the /api/thread-report/{brand} endpoint, and an MCP server exposes the dataset as tools for Claude and Cursor. A hand-curated /llms.txt indexes every citable URL for LLM crawlers.

What can fabric-composition data prove — and what can't it?

It shows, precisely, what fibres a garment is made of and how a brand's catalogue skews natural vs synthetic. It does not measure supply-chain ethics, dyes, water use, certifications, or lab-verified quality. We're explicit about those limits in our methodology.

Explore the Thread Report

Part of an openly-licensed dataset.

This page is one view of Fibr's Thread Report — fabric composition data for major fashion retailers, free to read and cite. Explore the rest:

About the Thread ReportWhat the dataset is, how it's built, and how to cite it.All brand reportsFabric breakdowns for every retailer we track.Brand rankingsWho uses the most natural fibre — and the most polyester.Brand comparisonsHead-to-head fabric data for every viable brand pair.Research findingsOriginal findings built on the dataset.State of FabricThe annual report on fashion's fibre mix.MethodologyHow we classify fibres and compute every number.Fabric guides & researchHow to read labels, decode fibres, shop smarter.

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Fibr shows you what every garment is actually made of before you buy it. Green means natural fibre. Red means plastic.

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