Iron Collar Stay for Bras — Specification, Uses and Sourcing Notes
Iron Collar Stay for Bras: Specification, Uses and Sourcing Notes
Iron Collar Stay is the version buyers specify for bras when the base material is fixed by performance rather than by price. This entry sets out what the material actually changes, which specification to write into the tech pack, and where the cost sits — the three questions that decide whether the item passes bulk approval.
What it is
Iron gives collar stay its durability under wash and abrasion. In practice that means the trim behaves differently in cutting, in finishing and in wear: shrinkage allowance has to be built into the spec. Buyers who specify the material up front avoid the most common failure — an item that looks right on the sample card and behaves differently in bulk.
Typical specification
| Item | Collar Stay |
|---|---|
| Base material | Iron |
| Standard size | 15 mm Width |
| Common finishes | Brushed Silver Finish, Silicone Wash Finish, Glossy Enamel Coating |
| Processes | Weft Knitting, Stone Washing, UV Protection Finishing |
| Typical application | Bras |
| Related applications | Footwear, Workwear, Suits, Sneakers |
| Test standard | Sedex SMETA |
| Usual packing | 200 pieces per polybag, 10000 per carton |
Properties that matter in buying
- Dimensional stability — 3% allowance is built into the spec before cutting.
- Colour fastness — tested to Sedex SMETA on the actual base material, not on a substitute.
- Mechanical performance — pull strength after 30 cycles or washes.
- Compliance — Sedex SMETA documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Suits
- Hats
- Coats
- Sneakers
- Trousers
- Gloves
How to specify it
- Name the base material in the tech pack, not just the item.
- Fix the size and tolerance in writing before sampling starts.
- Approve a counter sample made from the actual bulk base material.
- Order the test report against the standard your market requires.
- Retain a golden sample at the factory and a second one with you.
Related reading
Related specifications on this site cover waterproof seam seal tape, tack button, lobster clasp, felt fabric, and the processes most often paired with collar stay include stone washing, metal stamping, weaving.
Send the reference sample or tech pack and we will come back with a costed specification, a sampling timetable and the compliance documents your market requires.
