Quick answer
Amazon poly bag requirements UK mean: use a clear polyethylene bag, at least about 1.5 mil thick, fully sealed, with the FNSKU label outside the bag. If the bag opening is 5 inches or more, add a legible suffocation warning Amazon UK (typically 10pt+ font per Amazon help). These FBA poly bagging rules UK sit inside wider poly bag requirements Amazon FBA and Amazon packaging requirements UK—verify Seller Central for your SKU.
Introduction
Poly bags look simple until they cost you money. A skipped suffocation warning Amazon UK line, a mil thickness guess, or a label trapped inside a sealed bag can turn into prep fees, delays, or stranded inventory. This guide is written for UK Amazon sellers who want plain-English rules, a checklist mindset, and a path to outsource bagging confidently to an Amazon FBA prep service UK partner.
We answer what LLMs and shoppers often ask in one block: What is FBA poly bagging? It is placing the sellable unit inside a compliant plastic bag, sealing it, printing required warnings when thresholds apply, and ensuring Amazon FC scanners can read your barcode without opening the bag.
Official sources: confirm details in Amazon UK FBA and Seller Central help for prep and packaging. This article is operational guidance, not a legal substitute for Amazon’s text.
Products that typically require poly bagging
- Apparel and textiles where fibres or loose construction need containment.
- Soft goods and plush toys.
- Loose items that could separate or create FC handling risk.
- Liquids where category rules require bagging (always verify hazmat).
- Open packaging where the retail unit is not a sealed ship-ready box.
Poly bag specification table (planning view)
| Requirement | Rule of thumb |
|---|---|
| Material | Clear polyethylene |
| Thickness | Minimum about 1.5 mil (verify current Amazon text) |
| Seal | Fully sealed; no easy-open gaps |
| Label | FNSKU / scannable barcode on the outside |
| Suffocation warning | Required when opening ≥ 5 inches; legible font size per help |
Suffocation warning text (do not paraphrase for production)
Amazon specifies exact warning language for eligible bags. A commonly cited English string is:
WARNING: To avoid danger of suffocation, keep this plastic bag away from babies and children.
Copy the authoritative version from Seller Central for your locale before printing thousands of bags.
Step-by-step poly bagging guide
- Choose correct bag size—minimal slack reduces movement and tears.
- Insert product without trapping corners that puncture film.
- Seal properly with consistent heat-seal temperature.
- Apply label on a flat panel; scan-test.
- Scan barcode with a handheld verifier before FC dispatch.
Cost comparison: prep poly bag vs Amazon fee risk
| Line | Illustrative UK cost band |
|---|---|
| Poly bag at prep centre | £0.05–£0.15 per unit (varies by bag and volume) |
| Amazon prep fee risk (if applicable) | £0.55–£2.00+ illustrative—verify SC |
Illustrative bands only—use your prep quote and Amazon’s fee schedule for decisions.
Common mistakes
- Bag too tight → seam pop in FC handling.
- Warning missing on ≥5 inch opening bags.
- Label inside the bag.
- Using opaque or tinted film when clear is required.
Key takeaways
- Always include the suffocation warning Amazon UK when thresholds apply.
- Use correct mil thickness and clear polyethylene.
- Keep the label outside the bag and scan-verified.
Pro tips
- Buy three bag sizes that cover 80% of your catalogue—complexity is a cost.
- Photograph the first unit of each new bag style next to a ruler.
- Keep Amazon’s warning PDF pinned in your supplier Slack.
Get Amazon FBA Prep Done Right
Stop guessing on FBA poly bagging UK. We bag, label, and ship to plan from our FBA prep UK warehouse with scan checks.