Case Study: Custom Invisible Zipper for an Independent Boutique in Mexico

Invisible Zipper for an Independent Boutique in Mexico

An Independent Boutique approached us with a invisible zipper requirement for the Mexico 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

• Cartons packed to the factory ratio instead of the buyer's size ratio
• Shade drift between the approved lab dip and the bulk lot
• Elastic that lost recovery after three washes

What we specified

How it was resolved

1. We rebuilt the specification around Cotton and locked the tolerance before bulk.
2. The finish was moved to Mercerised Finish 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.

Result

• 50,000 pieces delivered inside the 5-week window.
• Unit cost held within 4.5% of the original quotation.
• Inspection-related rejection stayed under 0.5%.
• The specification is now on file, so reorders reproduce the approved sample.

What we would repeat

Approve a pre-production sample made from the actual bulk base material. Substitute material behaves differently in finishing.

Planning something similar?

Tell us the item, the quantity and the delivery window. We will quote it with the sub-processes named, so the lead time you approve is the lead time you get.