What is fabric testing in fashion?
Fabric testing is the laboratory and physical checking of textiles for properties such as strength, shrinkage, colour fastness and pilling before production.
In short
Fabric testing is the structured assessment of a textile's physical, chemical and performance properties against agreed standards. It confirms that a material will hold its shape, colour and appearance in wear and washing before a brand commits to bulk production.
How does it work in practice?
A brand's quality team defines a test manual per product category, often referencing international test methods. Mills or garment factories send swatches or bulk fabric to an accredited laboratory or test in-house. Typical checks include:
- Dimensional stability: shrinkage after washing or steaming.
- Colour fastness: to washing, rubbing, light and perspiration.
- Strength: tensile, tear and seam slippage.
- Surface: pilling and abrasion resistance.
- Composition and weight: verifying fibre content and GSM against the specification.
Results are recorded against the material in the PLM system and must pass before the pre-production sample is approved.
Why does it matter for fashion businesses?
A fabric that shrinks or bleeds creates returns, chargebacks from retail partners and damage to the brand's reputation. Testing also substantiates claims on the care label and fibre composition label, which are subject to consumer protection and labelling rules in many markets. For wholesale brands, a documented test history is part of what large retailers expect during supplier onboarding.
How is AI changing it?
Computer vision is used to grade pilling and colour change images more consistently than the human eye. Machine learning models trained on historical test data can flag fabrics likely to fail, so teams can prioritise retesting or switch suppliers earlier in development.
Common pitfalls
- Testing only development fabric and not bulk, where quality can differ.
- Applying the same protocol to every category regardless of end use.
- Keeping results in emails and PDFs instead of linking them to the material record.
Frequently asked questions
Who pays for fabric testing?
It depends on the supplier agreement. Often the mill or garment factory pays for routine bulk tests, while the brand funds development testing or third-party verification.
What is the difference between fabric testing and garment testing?
Fabric testing checks the material itself, while garment testing assesses the finished product, including seams, trims, prints and fit after washing. Most brands require both at different stages.
