Copper Bra Underwire for Blazers — Specification, Uses and Sourcing Notes
Copper Bra Underwire for Blazers: Specification, Uses and Sourcing Notes
Copper Bra Underwire is the version buyers specify for blazers 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
Copper gives bra underwire its durability under wash and abrasion. In practice that means the trim behaves differently in cutting, in finishing and in wear: plating and coating adhesion must be tested on the actual base. 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 | Bra Underwire |
|---|---|
| Base material | Copper |
| Standard size | 8# Gauge |
| Common finishes | Enzyme Wash Finish, Soft-Touch Rubber Coating, Silicone Wash Finish |
| Processes | Warp Knitting, Brushing, Die Casting |
| Typical application | Blazers |
| Related applications | Footwear, Suits, Jeans, Sleepwear |
| Test standard | California Prop 65 |
| Usual packing | 100 pieces per polybag, 10000 per carton |
Properties that matter in buying
- Dimensional stability — 1% allowance is built into the spec before cutting.
- Colour fastness — tested to California Prop 65 on the actual base material, not on a substitute.
- Mechanical performance — cycle life after 10 cycles or washes.
- Compliance — California Prop 65 documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.
Common uses
- Hats
- Swimwear
- Skirts
- Coats
- Bags
- Sleepwear
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 side release buckle, velour fabric, swing ticket, buttonhole elastic, and the processes most often paired with bra underwire include garment washing, anti-pilling finish, metal stamping.
If you are comparing suppliers, send us the spec they quoted against. We will quote the same spec and show you where the difference sits.
