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Care labels and fibre content: the paperwork that holds a container at customs

A shipment does not usually get held at customs because the fabric is wrong. It gets held because the label says something the fabric cannot prove.

Textiles26 Aug 20265 min read

What the label actually has to say

Fibre content by percentage, care instructions covering wash, dry, iron and bleach, and in most markets a country-of-origin declaration. The exact requirements vary by destination market, and a label has to satisfy the strictest market the shipment is actually going to, not the easiest one on your customer list.

Folded technical apparel with visible woven fabric texture
The fabric is the product. The label is the legal claim about it.

Treat the label wording with the same care as the invoice. It is a legal claim about the product, not a design element the pattern-maker finalises last.

Why the factory's number and the lab's number disagree

A factory usually quotes fibre content from the yarn order, not from a test on the finished, dyed and washed fabric. Dyeing, finishing and blending at the mill can shift the real ratio by several points without anyone intending to mislabel anything.

A blend labelled 95 percent cotton, 5 percent elastane that tests at 88 and 12 is a mislabelled product regardless of intent, and the correction happens on your invoice at destination, not the factory's. Ask for a fibre content test on the finished fabric, not a specification sheet describing the yarn that went into it.

Country of origin is a separate question

Where the fabric is woven and where the garment is cut and sewn can be two different countries, and origin marking generally follows wherever the last substantial transformation happened, not where the raw material was grown or spun.

Garment care labels and fibre content tags on finished apparel
The label leaving the line: the last document written before the carton is sealed.

Get the origin claim confirmed by your customs broker in the destination market before it goes on a single label. This is a jurisdiction-specific question the factory is not positioned to answer for you.

When to finalise the label

After the bulk fabric is approved, not against the tech pack fabric used to get the order started. A label written before bulk approval can be technically wrong the day the bulk fabric ships, because a dye lot or a finishing step can move the composition just enough to matter.

Lock the label copy the same week you lock the bulk fabric, and keep both tied to the same batch reference. A label without a batch behind it proves nothing if the shipment is ever questioned.

What to remember
  • The label has to satisfy the strictest destination market in the shipment, not the easiest one.
  • A factory's fibre content comes from the yarn order. Test the finished, dyed fabric before you trust the number on the label.
  • Country of origin follows the last substantial transformation. Confirm it with a customs broker, not the factory.
  • Finalise the label copy after the bulk fabric is approved, tied to the same batch reference.

Frequently asked questions

What information must a care label declare?

Fibre content by percentage, care instructions such as wash and dry symbols, and in most markets a country-of-origin declaration. The exact requirements vary by destination market.

Can a factory's stated fibre content differ from a lab test result?

Yes, and it is one of the most common causes of a customs hold or a retailer compliance rejection. A blend labelled 95/5 that tests at 88/12 is a mislabelled product regardless of intent.

When should the label be finalised in the production sequence?

After the bulk fabric is approved, not before. A label written against the tech pack fabric can be wrong if the bulk fabric shifts even slightly during dyeing or finishing.

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