Brass Waterproof Breathable Fabric for Underwear — Specification, Uses and Sourcing Notes
Brass Waterproof Breathable Fabric for Underwear: Specification, Uses and Sourcing Notes
Brass Waterproof Breathable Fabric is the version buyers specify for underwear 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
Brass gives waterproof breathable fabric its weight-to-strength ratio. In practice that means the fabric behaves differently in cutting, in finishing and in wear: the finish has to be applied before assembly. 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 | Waterproof Breathable Fabric |
|---|---|
| Base material | Brass |
| Standard size | 160 gsm |
| Common finishes | Powder Coating, Silicone Wash Finish, Yarn-Dyed Finish |
| Processes | UV Protection Finishing, Metal Stamping, Flame Retardant Finishing |
| Typical application | Underwear |
| Related applications | Jackets, Scarves, Bags, Lingerie |
| Test standard | BSCI |
| Usual packing | 200 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 BSCI on the actual base material, not on a substitute.
- Mechanical performance — pull strength after 20 cycles or washes.
- Compliance — BSCI documentation issued with the shipment.
- Consistency — the approved counter sample becomes the reference for every reorder.

Common uses
- Outdoor Tents
- Baby Clothing
- Coats
- Yoga Wear
- Backpacks
- Lingerie
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, pearl button, nylon taffeta fabric, pu coated fabric, and the processes most often paired with waterproof breathable fabric include ultrasonic welding, embroidery, uv protection finishing.
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.



