Bag Packaging and Labeling: What to Spec Before the Factory Seals Your Cartons
Every packaging failure in this business happens after the goods leave the factory.
The carton gets held at the port because nobody marked the country of origin. Amazon refuses 2,000 units because the polybags have no suffocation warning. The hangtag says “100% Cotton” and the bag is 65/35, and now an FTC complaint is a live possibility.
But every packaging decision has to be made before the factory tapes the last box shut. Between those two moments sits thirty days of ocean, and there is no window in there to fix anything.
That gap used to be survivable. You could ship it wrong, pay Amazon to re-bag and re-label at the fulfillment centre, and eat a fee. That door closed on January 1, 2026 — Amazon ended its in-house US FBA prep service. Nobody at the warehouse will fix your packaging now. It arrives right, or it doesn’t arrive.
Which means packaging stopped being an email you send in week eleven. It belongs in the tech pack, next to the stitch density.
Here’s what actually has to be in there, sorted by the only thing that matters: who will stop your shipment if you get it wrong.
What packaging is legally required on a bag imported into the US?
Exactly one thing: the country of origin, permanently and conspicuously marked on the bag itself. That’s it. Everything else people put on bags — fiber content, care symbols, size tags — is either a channel requirement or a voluntary choice. Most brands don’t know the difference, and it costs them.
Country-of-origin marking sits in 19 U.S.C. §1304 and 19 CFR Part 134. The rules are specific and unglamorous:
- On the article, not just the polybag. A sticker on the outer bag doesn’t satisfy it.
- Permanent enough to survive to the ultimate purchaser. A woven or printed label sewn into a side seam is the normal answer for a bag. A paper hangtag is not.
- Conspicuous and legible. Buried under a lining flap where nobody would look does not count.
- English. “Fabriqué en Chine” doesn’t do it.
Get it wrong and CBP can assess marking duties of 10% ad valorem on top of everything else, or simply refuse release until the goods are marked, exported, or destroyed — all at your cost, in a US warehouse, on your clock.
This is the cheapest line item in your entire project and the one most likely to be assumed rather than specified. Put the exact wording, the exact label construction, and the exact seam position in the tech pack. Not “made in China label” — which label, sewn where.
Does a bag need a fiber content label?
No. Handbags and luggage are explicitly exempt from US fiber content labeling. The Textile Fiber Products Identification Act carves them out by name — §12(a)(11) exempts “textile fiber products incorporated in headwear, handbags, luggage, brushes, lampshades, or toys.” The FTC’s own guidance says the same.
Most bag brands put a fiber content label on anyway. They copy the apparel playbook, because everyone in the room came from apparel.
That’s not neutral. A voluntary claim is still a claim, and now you have to be able to prove it.
Think about what that means in a real project:
- Your marketing team writes “100% Cotton Canvas” on the hangtag because it reads premium.
- Your production is 65% cotton / 35% polyester, because that’s what survives the abrasion test.
- Your customs entry classifies the bag by its actual outer surface material, because that’s what determines your duty rate.
You now have three documents that disagree with each other, and you created the conflict yourself by making a claim the law never asked for. The FTC treats a false fiber representation as misbranding. And if the customs entry and the retail tag tell different stories about what the bag is made of, that’s not a great file to have sitting in your records for the five years CBP can look back.
Two clean options. Either say nothing about fiber content — legal, and what the exemption is for. Or say something and make it exactly, verifiably true, matched to your bill of materials and your customs classification. What you must not do is let the tag get written by whoever is designing the hangtag.
The same logic runs through leather. The FTC’s Guides for Select Leather and Imitation Leather Products cover handbags directly. Calling a PU bag “leather,” or a bonded/split product “genuine leather” without qualification, is the single most common deception claim in this category. If the material isn’t full-grain, say what it is.
What does Amazon actually require, and what changed in 2026?
Every FBA unit needs a scannable FNSKU, a compliant polybag, and a carton that passes weight and dimension limits — and since January 1, 2026, Amazon will no longer fix any of it for you. Non-compliant units get refused at the dock, or accepted with prep fees of roughly $0.30 to $1+ per unit. On a 5,000-piece order, that’s a four-figure penalty for a missing sticker.
Two changes worth knowing if your last shipment was in 2025:
| Change | Effective | What it means for you |
|---|---|---|
| Amazon ended in-house US FBA prep | Jan 1, 2026 | No safety net at the FC. Prep happens at the factory, at a 3PL, or in your garage. |
| Amazon ending commingled (stickerless) inventory in the US | Mar 31, 2026 | Practically everyone needs an FNSKU on every unit now. |
Bags are soft goods with loose parts and exposed surfaces, which means they essentially always need a polybag. The specs Amazon scans against:
| Item | Requirement |
|---|---|
| Polybag material | Transparent, minimum 1.5 mil thickness |
| Seal | Fully sealed — heat seal or adhesive strip |
| Fit | Snug; shouldn’t extend more than ~3 inches past the product |
| Suffocation warning | Required if the bag opening is 5 inches or more when laid flat. Exact wording and a font size that scales with bag dimensions. |
| Unit barcode | FNSKU, scannable, on a flat surface, no glare, only one barcode visible |
| Master carton | ≤ 50 lb (22.5 kg) and ≤ 25 in / 63.5 cm on any side |
| Over-weight cartons | “Team Lift” labels required above the threshold |
The warning text is not paraphrasable — Amazon wants the specific string, at the specific size band. Ask your polybag supplier which grade they’re quoting: most run a standard grade and an FBA-compliant grade, and the compliant one costs a little more and eliminates an entire rejection category.
The part nobody tells you. All of this can be done at the factory, in the same line that packs your bags. Polybagging, FNSKU application, warning labels, carton weights inside spec, shipping marks. The factory is already touching every unit once. Prepping in China costs a fraction of prepping in a US 3PL, and it removes an entire handoff.
But the factory can only do it if it’s in the spec before the line starts. After the cartons are sealed, opening 5,000 of them to add a sticker is not a small favour — it’s a second production run.
If you’re sending FNSKU files to a factory for the first time, do it the boring way: send the label PDFs and the exact placement instructions before the packing cartons are sealed, and ask for photographs of a prepped unit and a labelled carton before the freight pickup. Ten minutes of looking at photos beats a rejection email six weeks later.
What goes on the carton, and why does it matter for customs?
Shipping marks, carton dimensions, net and gross weight, and carton count — and they have to match the packing list exactly, because CBP compares them. A carton marked 24 pcs that actually holds 25 is a discrepancy, and discrepancies are how random exams turn into full exams.
The carton is the least glamorous document in the project and one of the most-checked. Spec it:
- Shipping marks: consignee, PO number, carton number (
1 of 40), destination port, country of origin. - Net weight / gross weight / dimensions on the carton and on the packing list, and they agree.
- Carton count and pieces per carton consistent across the packing list, commercial invoice and the bill of lading.
- One PO per carton wherever possible — mixed cartons are a receiving nightmare and an Amazon rejection trigger.
Then the paperwork the factory produces alongside the goods:
| Document | Who issues | What it’s for |
|---|---|---|
| Commercial invoice | Factory | The declared value your duty is calculated on — with freight and insurance broken out separately |
| Packing list | Factory | Must reconcile to the cartons, exactly |
| Bill of lading | Carrier | Title to the goods |
| ISF (10+2) | You / your broker | Filed 24 hours before the vessel loads in China. Late filing = $5,000 penalties |
| Certificate of origin | Factory / CCPIT | Where required |
| Test reports | Lab | If your market or buyer demands them — see the compliance guide |
The ISF one catches people. It’s filed on the US side, from data the Chinese factory holds, twenty-four hours before a vessel you don’t control leaves a port you’ve never seen. If your factory is slow with the packing list, you are late by definition. Ask for the commercial invoice and packing list drafts at the pre-shipment inspection stage, not at booking.
What should be in the packaging section of your tech pack?
Everything above, written down, before sampling ends. Here’s the whole thing as a checklist you can lift straight into your spec.
On the bag
- Country of origin label: exact wording, construction, seam position
- Brand label / main label: artwork, size, position
- Fiber content: decide deliberately — omit it, or make it match the BOM and the customs classification
- Leather claims: verified against the FTC Leather Guides, or don’t make them
- Hangtag: artwork, string/pin, attachment point
- Dust bag (if any): material, size, closure, print
Unit packaging
- Polybag: thickness, transparency, seal type, fit
- Suffocation warning: wording and font size band (if opening ≥ 5″)
- FNSKU / barcode: file, placement, one code visible only
- Tissue, filler, shape-retention insert — for structured bags, this is what stops the bag arriving creased
Carton
- Pcs per carton, carton dimensions, net/gross weight
- Shipping marks: full artwork
- Weight ceiling per carton (≤ 50 lb if FBA-bound)
- One PO per carton
Documents
- Commercial invoice with freight/insurance separated
- Packing list reconciling to cartons
- ISF data available 24h before vessel load
- Photo proof of prepped unit + labelled carton before pickup
Run this before the sample is approved, not after. The sample approval stage is the last moment where changing a label costs nothing — after that, every change is a change order.
The one-sentence version
Packaging is the only part of a bag project where a $0.02 sticker can strand a $30,000 shipment, and the only fix window closes the moment the factory tapes the carton.
So put it in the spec. Not in an email. Not in a WeChat message the week before shipment. In the tech pack, alongside the fabric and the stitch count, where it gets sampled, approved, and inspected like everything else.
If you’re building a spec now and want the packaging, labelling and carton section written by the people who’ll actually be packing it — including FBA prep at the line rather than at a US 3PL — send us what you’re making. If you’re still deciding how the branding goes on the bag itself, our logo and printing methods page is the place to start.
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