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What OEKO-TEX Standard 100 Means on a Hoodie

STANDARD 100 by OEKO-TEX tests a hoodie for chemical residues. What it doesn't cover, how to check a label number, and where Canadian law fits.

You turn a hoodie inside out in a shop and find a small tag: STANDARD 100 by OEKO-TEX. It looks official, and it probably reads as "safe" or "eco". It means something narrower than either, and the narrow version is more useful once you know how to read it.

This is a buying explainer. It covers what the label measures, what it doesn't, how to check one is real, and where it sits next to Canadian labelling law. It isn't a claim about any garment of ours.

What the label actually says

OEKO-TEX is a private association based in Zurich. STANDARD 100 is one of several labels it runs. On its own STANDARD 100 page, OEKO-TEX describes it as "a label for textiles tested for harmful substances", and says every thread, button and accessory on a labelled item has been tested against a list of more than 1,000 harmful substances.

So the claim is about chemical residues in the finished article and its parts. A lab checks the cloth, the sewing thread, the rib, the drawcord, the print and any zip against a catalogue of substances, each with a limit. Pass every line and the product can carry the label.

That's it. It's a residue test with published limits. It's real and reasonably strict, but it's one thing.

What it doesn't cover

This is where most of the confusion lives. STANDARD 100 says nothing about:

  • How the cotton was grown. It isn't an organic label. OEKO-TEX runs a separate ORGANIC COTTON label for that, and we've written about what organic cotton actually means on a hoodie.
  • The factory. Wastewater, energy, chemicals used and washed out before the garment was finished. OEKO-TEX points to its separate MADE IN GREEN and RESPONSIBLE BUSINESS schemes for production and social questions.
  • Working conditions. Same answer. Different label.
  • Durability or quality. A thin hoodie that pills in a month can pass. So can one that shrinks two sizes. A residue test doesn't look at weight, shrinkage or which seams hold.
  • Dye that bleeds in the wash. Colour running onto your towels is a colourfastness question, not a residue one.

If a shop page uses the tag to imply the whole garment is green, that's a stretch the label itself doesn't make. More on why that matters in Canada below.

The four product classes

Limits aren't the same for every product. OEKO-TEX sorts certified items into four classes, and the stricter the class, the lower the limits:

  1. Class I: articles for babies and children up to 3 years. The strictest.
  2. Class II: articles with direct skin contact. OEKO-TEX's example is bed linen.
  3. Class III: articles with no direct skin contact. Their example is a jacket.
  4. Class IV: home textiles and decoration, like curtains.

A hoodie can sit in more than one class depending on how the maker positions it, so don't guess. The certificate names the class.

The limits move every year

A label isn't a permanent stamp. OEKO-TEX says certificates are issued for one year, and the limit catalogue itself is revised on a regular cycle.

The current round is a good example. On 3 March 2026 OEKO-TEX published its New Regulations 2026, with the new limit values taking effect on 1 June 2026 after a three-month transition. The limit values document sets bisphenol S, along with bisphenols B, F and AF, at 200 mg/kg for STANDARD 100. It adds substances such as n-hexane at 100 mg/kg and vinyl chloride monomer at 1 mg/kg. It also sets out a process for products that go over the total fluorine limit: the maker can ask for a verification test to show the fluorine comes from a non-PFAS source, and must back that up with manufacturing documents.

Two practical points follow. A label on a hoodie bought in 2023 was checked against 2023's list. And if the standard keeps tightening, last year's pass doesn't tell you this year's result. The yearly renewal is the part doing the work.

How to check a label is real

Anybody can print a logo. Checking takes about a minute.

  1. Find the label number. A genuine STANDARD 100 label carries a certificate or label number, and often a QR code.
  2. Scan the QR code, or type the number into the OEKO-TEX Label Check.
  3. Look at who holds the certificate and what it covers. A certificate held by a fabric mill covers that mill's fabric, not necessarily the finished hoodie with its print and trims.
  4. Check the product class, and check the certificate is still in date.

The third step catches the most common blur. OEKO-TEX runs a modular system where components can be certified on their own, and a finished product built entirely from certified parts can skip some testing. That's sensible for makers. It also means a brand can truthfully say "made with OEKO-TEX certified fabric" about a garment that carries no label of its own. Both statements can be accurate. They aren't the same statement.

Reading the wording on a product page

Shop copy rarely reproduces the label exactly. Here's how the common phrasings line up with what you can actually check:

  • "STANDARD 100 by OEKO-TEX" with a label number. The strongest version. Look the number up and confirm it covers the finished article, not just a part of it.
  • "Made with OEKO-TEX certified fabric" or "certified materials". A component claim. The cloth may be covered while the print, thread or trims sit outside that certificate.
  • The logo or the name with no number anywhere. Nothing to verify. Ask the seller for the number before treating it as a claim.
  • "Eco-friendly", "clean" or "non-toxic" next to the logo. Words the residue test doesn't support on its own. The label answers a narrower question.

Where Canadian law fits

The label sewn into every hoodie sold here is governed by the Textile Labelling and Advertising Regulations. Those rules deal with fibre content, in generic names and percentages, and with identifying the dealer responsible. That's the "80% cotton, 20% polyester" line and the name or number that tells you who stands behind the garment. OEKO-TEX is voluntary and sits on top of that. Its absence on a hoodie tells you nothing either way. Plenty of makers simply don't pay for it.

Marketing around the label is a separate matter. In June 2025 the Competition Bureau published final guidelines, Environmental claims and the Competition Act. The Bureau's announcement notes that certain claims about a product's environmental benefits must be based on adequate and proper testing. One of the guideline principles is that environmental claims should be clear and specific, not vague. The Bureau's own example is a product called eco-friendly, which may suggest a benefit across its entire life cycle. Its short version: "When in doubt, spell it out."

Read that next to what STANDARD 100 actually measures. A residue test on a finished garment says nothing about the farm or the factory. A shop that turns the tag into "eco-friendly hoodie" is making a broader claim than the certificate supports, and in Canada that's now a claim with a legal test behind it.

What the evidence doesn't settle

Be honest about the label's limits too. OEKO-TEX publishes its limits and the substances on its list, which is more than most labels do. What it can't tell you, and doesn't claim to, is what a given residue level means for one particular person wearing one particular hoodie. Limits are a threshold, not a risk score. A pass doesn't make the garment better in every way, and a product without the label isn't proof of a problem.

Some of the advice around this subject is folklore. "Certified means you don't need to wash it first" isn't in the standard. Washing a new hoodie before wearing it is still a care decision, and the reasons are mostly loose dye and finishing, which the residue test doesn't address. Our first-wash routine is in the care instructions.

The short version

  • STANDARD 100 means the labelled article and its parts were tested against a published list of harmful substances, with limits that depend on product class.
  • It doesn't cover how the cotton was grown, how the factory runs, how the garment is built or how long it lasts.
  • Certificates run for a year, and the limits are revised regularly. The 2026 changes took effect on 1 June 2026.
  • Check the number in the Label Check. Read who holds the certificate and what it covers.
  • In Canada, fibre content labelling is the law. OEKO-TEX is optional. Calling a garment "eco" on the back of a residue test is a stretch the Competition Bureau's guidance warns against.

Read the label for what it is: one honest answer to one question. The cloth weight, the seams and the cut are still yours to judge, and they decide whether a hoodie lasts.

Sources

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