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Case Study: Custom Waterproof Breathable Fabric for a Hat and Cap Producer in South Korea

Source:Carved Bone Inlay Box / Time:2026-09-18

Waterproof Breathable Fabric for a Hat and Cap Producer in South Korea

A Hat and Cap Producer approached us with a waterproof breathable fabric requirement for the South Korea market. The brief was specific: a defined look, a hard launch date and a unit cost that had to survive freight and duty. This case study records what was specified, what went wrong in sampling and how the bulk order was delivered.

The challenge

  • Shade drift between the approved lab dip and the bulk lot
  • MOQ that was quoted per colourway rather than per style
  • A spec that lived in an email instead of a tech pack

Waterproof Breathable Fabric case study

What we specified

ItemWaterproof Breathable Fabric
Client typeA Hat and Cap Producer
MarketSouth Korea
Order volume50,000 pieces across 3 specifications
Base materialCotton
Standard size210 gsm
FinishSandblasted Finish
Sampling rounds3
Delivery window10 weeks from PO to ex-factory
ComplianceGB 18401

How it was resolved

  1. We rebuilt the specification around Cotton and locked the tolerance before bulk.
  2. The finish was moved to Antique Brass Plating after strike-off tests showed better durability.
  3. A pre-production sample was approved and retained as the golden reference.
  4. Production ran with in-line inspection and a mid-run photo report.
  5. Cartons were packed to the client's own barcode and ratio specification.

Waterproof Breathable Fabric production run

Result

  • 50,000 pieces delivered inside the 10-week window.
  • Unit cost held within 4.5% of the original quotation.
  • Inspection-related rejection stayed under 2.0%.
  • The specification is now on file, so reorders reproduce the approved sample.

What we would repeat

Lock the material standard before sampling. Once the base changes, every downstream approval has to be redone and the calendar slips.

Planning something similar?

Share the programme details and we will propose two alternatives — one optimised for unit cost, one for lead time — and let you choose.

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