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Global Organic Textile Standard logo
Global Organic Textile Standard
Global · Tier 2 Trusted
Tún (Iceland) logo
Tún (Iceland)
Iceland · Tier 1 Gold
Non-GMO Project Verified logo
Non-GMO Project Verified
United States · Tier 3 Specialty
What it meansThe strictest, most widely-recognised standard for organic textiles. Covers the full supply chain from organic fibre to finished garment, with environmental AND social criteria.Vottunarstofan Tún is Iceland's only accredited organic certifier. Accredited by MAST (Matvælastofnun) under the EU 2018/848-equivalent Icelandic standard, so a Tún-certified product is also recognised as EU-organic.North America's leading 'no genetically modified organisms' certification. Tests for the presence of GMOs in finished products. NOT organic.
ScopeTextilesFoodFood
Established200219942010
InspectionAnnual on-site, IOAS-accreditedAnnual on-site, MAST-accreditedAnnual third-party audit + lab testing
Residue testingRequired for finished productsRequired for at-risk operationsGMO testing only (not pesticide)
Guarantees
  • ≥70% certified-organic natural fibre (the 'organic' grade requires ≥95%).
  • Restricted dyes, no chlorine bleach, no formaldehyde, no banned heavy metals.
  • Wastewater treatment requirements.
  • Social standards based on ILO core conventions (no child labour, no forced labour, fair wages, safe workplace).
  • Annual on-site inspection by IOAS-accredited certifier.
  • ≥95% organic ingredients per EU rules.
  • No synthetic pesticides, no GMOs.
  • Annual on-site inspection.
  • Animal welfare standards (outdoor / pasture access, geothermally-warmed greenhouse compatibility for vegetables).
  • Verified absence of GMO ingredients (with action thresholds, not zero tolerance).
  • Annual third-party verification.
  • Tracing and segregation across the supply chain.
Does NOT
  • Doesn't cover non-textile components (zips, buttons, prints) beyond the chemical-restriction list.
  • There aren't many Tún-certified operations (~120–160) — coverage in the Icelandic market is narrower than in the EU mainland.
  • Doesn't mean organic — Non-GMO products can use synthetic pesticides and fertilizers freely.

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