Case Study: Custom Inside Boys Swim Trunk for a Coffee Roaster Chain in Japan
Source:Inside Boys Swim Trunk /
Time:2026-09-18
Inside Boys Swim Trunk for a Coffee Roaster Chain in Japan
A Coffee Roaster Chain approached us with a inside boys swim trunk requirement for Japan. 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
- Unclear responsibility when a defect shows up after washing
- No reliable way to track a order once it enters production
What we specified
| Product | Inside Boys Swim Trunk |
|---|---|
| Client type | A Coffee Roaster Chain |
| Market | Japan |
| Order volume | 500 pieces across 3 colourways |
| Base fabric | Pique Knit |
| Decoration | Satin Printed Label |
| Size range | Custom grading |
| Sampling rounds | 2 |
| Delivery window | 8 weeks from PO to ex-factory |
How it was resolved
- We rebuilt the tech pack around Pique Knit and locked shrinkage allowance before grading.
- Decoration was moved to Satin Printed Label 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 8-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
Lock the colour standard before grading. Once a shade moves, every downstream approval has to be redone and the calendar slips.
Planning something similar?
Tell us the quantity, target price and delivery window, and we will build a customisation programme around those three numbers.
