Case Study: Custom Waterproof Breathable Fabric for a Denim Manufacturer in the United Kingdom
Source:Handcrafted Wax Warmers /
Time:2026-09-18
Waterproof Breathable Fabric for a Denim Manufacturer in the United Kingdom
A Denim Manufacturer approached us with a waterproof breathable fabric requirement for the the United Kingdom 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
- Lead time quoted without the plating or dyeing sub-process
- A compliance document that arrived after the goods were already shipped
- Reorders that quietly changed supplier and changed the hand feel

What we specified
| Item | Waterproof Breathable Fabric |
|---|---|
| Client type | A Denim Manufacturer |
| Market | the United Kingdom |
| Order volume | 20,000 pieces across 4 specifications |
| Base material | Copper |
| Standard size | 110 gsm |
| Finish | Rainbow Iridescent Finish |
| Sampling rounds | 3 |
| Delivery window | 8 weeks from PO to ex-factory |
| Compliance | ISO 12947 Abrasion Resistance |
How it was resolved
- We rebuilt the specification around Copper and locked the tolerance before bulk.
- The finish was moved to Anodised Finish after strike-off tests showed better durability.
- A pre-production sample was approved and retained as the golden reference.
- Production ran with in-line inspection and a mid-run photo report.
- Cartons were packed to the client's own barcode and ratio specification.

Result
- 20,000 pieces delivered inside the 8-week window.
- Unit cost held within 1.5% of the original quotation.
- Inspection-related rejection stayed under 1.0%.
- 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?
If you are comparing suppliers, send us the spec they quoted against. We will quote the same spec and show you where the difference sits.



