Case Study: Custom Wireless Bra for an Amazon Private Label Seller in China
Source:Wireless Bra /
Time:2026-09-18
Wireless Bra for an Amazon Private Label Seller in China
An Amazon Private Label Seller approached us with a wireless bra 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
- Inconsistent sizing between production runs
- Minimum order quantities far above what a growing brand can absorb
- Unclear responsibility when a defect shows up after washing
What we specified
| Product | Wireless Bra |
|---|---|
| Client type | An Amazon Private Label Seller |
| Market | China |
| Order volume | 1,200 pieces across 3 colourways |
| Base fabric | Chambray |
| Decoration | Debossing |
| Size range | S-4XL |
| Sampling rounds | 3 |
| Delivery window | 5 weeks from PO to ex-factory |
How it was resolved
- We rebuilt the tech pack around Chambray and locked shrinkage allowance before grading.
- Decoration was moved to Debossing 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
- 1,200 pieces delivered inside the 5-week window.
- Unit cost held within 4.5% of the original quotation.
- Return rate linked to fit or workmanship stayed under 0.5%.
- The specification is now on file, so reorders reproduce the approved sample.
What we would repeat
Lock the colour standard before grading. Once a shade moves, every downstream approval has to be redone and the calendar slips.
Planning something similar?
Share a reference photo or a sample garment and we will reverse-engineer the specification for your own label.
