Case Study: Custom Jacket Zipper Slider for an Amazon Private Label Seller in China
Source:Jacket Zipper Slider /
Time:2026-09-18
Jacket Zipper Slider for an Amazon Private Label Seller in China
An Amazon Private Label Seller approached us with a jacket zipper slider requirement for China. The brief was specific: a defined look, a hard launch date and a unit cost that had to survive shipping and duty. This case study records what was specified, what went wrong in sampling and how the bulk order was delivered.
The challenge
- Long lead times that miss the selling season
- Color drift between lab dips and bulk fabric
- Inconsistent sizing between production runs
What we specified
| Product | Jacket Zipper Slider |
|---|---|
| Client type | An Amazon Private Label Seller |
| Market | China |
| Order volume | 500 pieces across 3 colourways |
| Base fabric | Nylon |
| Decoration | Embossing |
| Size range | S-4XL |
| Sampling rounds | 2 |
| Delivery window | 6 weeks from PO to ex-factory |
How it was resolved
- We rebuilt the tech pack around Nylon and locked shrinkage allowance before grading.
- Decoration was moved to Embossing after strike-off tests showed better wash 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 size ratio specification.
Result
- 500 pieces delivered inside the 6-week window.
- Unit cost held within 2.0% of the original quotation.
- Return rate linked to fit or workmanship stayed under 1.5%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Approve a pre-production sample from the actual bulk fabric. Proto cloth behaves differently in cutting and washing.
Planning something similar?
Book a 20-minute call with our merchandising team and get a written quotation within 48 hours.
