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Each retailer's product pages are crawled monthly; fibre percentages are parsed verbatim from the composition label the retailer publishes. Natural-fibre percentage is the sum of natural fibres (cotton, linen, silk, wool, viscose, lyocell, hemp, etc.) per garment, then averaged across all products analysed.","license":"https://tryfibr.app/terms","citation":"Fibr Thread Report — River Island, 2026-06-13. https://tryfibr.app/thread-report/riverisland","dataSource":{"raw":"https://info.tryfibr.app/riverisland.json","snapshots":"https://info.tryfibr.app/snapshots/index.json","reportPage":"https://tryfibr.app/thread-report/riverisland"},"dateModified":"2026-06-13T17:52:22.179Z"}