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Fabrics & Compliance · 7 min read · 2026-09-09

Pilling and Colourfastness — Tests Buyers Should Spec

Pilling and colour loss destroy reviews. Spec methods early, then check sample-to-bulk consistency on the approved fabric lot.

Pilling and colour loss destroy reviews. Spec methods early, then check sample-to-bulk consistency on the approved fabric lot.

Quick answers

  • Write pilling method + grade into the brief.
  • Write colourfastness methods for wash / rub / perspiration (and chlorine for swim).
  • Approve a fabric lot, not only a garment photo.

Pilling control for leggings

Hand, yarn, finish and garment abrasion zones all matter. Brushed vs non-brushed behaves differently — see also brushed vs terry for knit programmes. For yoga opacity/squat gates, use squat-proof testing.

Colourfastness testing map

ProgrammePrioritise
Yoga / studioWash + rub + perspiration
Swim / poolChlorinated water (ISO 105 E03 class) + light
Tennis / outdoorWash + light + rub

Swim lab narrative: chlorine-resistant swimwear fabric tests.

Sample vs bulk fabric consistency

Keep the same mill code, GSM window, finish and lot references from proto → PPS → bulk. If the mill changes lot, re-check pilling and colourfastness — do not assume.

ZIESHINE path

Fabric tests · named bases · yoga manufacture.

Next steps

  1. Open the manufacture hub for OEM / private-label programmes.
  2. Browse related products in the library.
  3. Review the matching fabric path.
  4. Download buyer checklists (deal sheet / capacity / cert pack).
  5. Submit a development brief — Export desk replies within 12 h.

Submit development brief Browse products View fabrics Download checklists

FAQ

How do I prevent leggings pilling?

Choose the right hand and finish, avoid abrasive trims in test, and lock yarn lot + finish before bulk.

Which colourfastness tests matter?

Wash, rub (dry/wet), perspiration; swim also needs chlorinated-water fastness.

Why did bulk pill more than the sample?

Often a different yarn lot, finish, or construction tweak — demand sample vs bulk fabric consistency checks.

Do brushed fabrics pill more?

They can show wear differently; spec pilling grades for the actual finish you will buy.