Hand a buyer two cosmetic pouches made from the same fabric with the same print and the same dimensions. One feels like a gift; the other feels like packaging. The difference is almost never the fabric — it is the hardware and the finishing. And hardware is the part of a bag brief most often left blank, because it is the part most buyers have never had to specify.
This is the specification list we work through with clients, in the order it matters.
1. The zipper: four decisions, not one
"A zipper" is not a specification. Four separate choices decide how it behaves and what it costs.
Type
- Nylon coil — the default for soft pouches. Light, flexible, follows curves, tolerates being stuffed. Available from #3 (fine, for small pouches) to #5 and beyond.
- Metal — brass, aluminum or antique finishes. Reads as premium, especially with a metal slider. Heavier, stiffer, and it will kink on a tight curve; it belongs on flat or gently curved panels.
- Moulded plastic — chunky, sporty, common on wash bags and backpacks. Very durable, very casual.
- Invisible / concealed — used where the zip should disappear into a seam. Common on PU pouches that want a clean silhouette.
Size
The number (#3, #5, #8, #10) is the coil or tooth width in millimetres when closed. A cosmetic pouch usually sits at #3 or #5. Going up a size adds visual weight and strength; going down adds refinement and fragility. Match it to the pouch: a #10 on a 15 cm pouch looks like a mistake.
Slider and puller
The slider is the mechanism; the puller is the thing the customer touches. A self-locking slider stays closed under load — right for a bag that gets thrown in a suitcase. A non-lock slider opens with less effort but can creep open. Pullers are where brands spend their detail budget: metal with a debossed logo, a leather tab, a woven cord loop, a custom shape. A custom puller needs a mould, so it carries a tooling charge and usually a quantity floor.
Tape and finish
The tape is the fabric strip the teeth are sewn to. It shows on the inside of the pouch, and it can be dyed to match the lining or deliberately contrasted. The slider finish — nickel, antique brass, matte black, painted to Pantone — has to be chosen at the same time as the print, or the two will argue with each other.
| Configuration | Feel | Cost step | Best for |
|---|---|---|---|
| #3 nylon coil, standard painted slider | Functional | Baseline | High-volume GWP, promotional pouches |
| #5 nylon coil, name-brand slider | Reliable, smooth | Low | Retail programs where returns matter |
| #5 metal zip, matching metal slider | Premium, weighty | Medium | Gift sets, premium gift-with-purchase |
| Metal zip + custom debossed puller | Branded, tactile | Medium + tooling | Hero product, repeat annual program |
| Invisible zip, dyed tape | Clean, minimal | Low–medium | PU and leather pouches, quiet luxury styling |
2. The rest of the metal
- D-rings and swivel hooks — if the pouch clips into a larger bag, this is a structural part, not decoration. Specify the load and the finish; thin wire D-rings deform in the first month.
- Magnetic snaps — common on flap pouches. Cheap snaps leak magnetic field and can interfere with cards; specify a proper grade if the pouch will hold bank cards or a phone.
- Rivets and eyelets — decorative and functional at once. A rivet that is not set deeply enough will pull through the fabric; a badly set eyelet tears the panel.
- Buckles and adjusters — on belt bags and slings, the buckle is the part that fails. Specify metal or good acetal, not thin stamped steel.
- Feet — small metal studs on the base. They protect the material and they signal care. Cheap to add, disproportionately effective.
Finish consistency is the quiet trap: antique brass from one supplier and antique brass from another are different colours. If several hardware parts sit on one bag, specify the finish by a reference sample and keep one physical standard on file.
3. Construction details that read as quality
Hardware is half of it. The other half is what happens at the edges and the seams:
- Topstitching — even, unbroken, and at a consistent distance from the edge. Uneven stitching is the first thing a trained eye notices and the cheapest thing to get right.
- Stitch density — roughly 8–12 stitches per inch on soft goods. Too few and the seam is weak; too many and the material perforates along the line.
- Bartacks at zip ends and handle attachments — a reinforced stitch block where load concentrates. Omitting them is invisible until something tears.
- Piping and binding — a piped edge gives structure and a more expensive silhouette; it also adds minutes per piece, which is real money at volume.
- Edge paint on cut leather or PU edges — sealed edges look finished; raw edges fray and look unfinished within weeks.
- Lining attachment — a lining that is only stitched at the top opening will bag out inside. Specify how it is secured.
- Zip-end treatment — how the zip terminates at each end of the opening decides whether the pouch gapes. Look at the sample with the pouch full.
4. What briefs leave out — and what it costs later
- Zipper length and tolerance. Give the finished opening length in millimetres; a 1 cm difference changes how the pouch sits.
- Tape colour. Unspecified means the closest stock colour, which is often not your lining colour.
- Puller drop length. Long pullers look generous but catch on things inside a handbag.
- Slider finish. Nickel, brass and matte black are not interchangeable with a printed logo colour scheme.
- Hardware reference sample. One physical approved piece beats any written description.
- Test requirement. A zip cycling test (open and close a few hundred times on the sample) catches the failures that only appear in use.
The short version
Perceived quality in a cosmetic pouch comes from four things: a zip that is correctly sized and smoothly run, metal that is consistently finished, edges that are sealed and stitched evenly, and reinforcement where load actually lands. All four are specification decisions you can make in one page — and all four are things a buyer notices without being able to name them.
GAOHE builds cosmetic pouches, totes and gift packaging in Shenzhen with hardware specified per program, including custom pullers and branded metal. If you have a reference piece you like, send it — matching a feel is faster than describing one.