What Are Amazon FBA Prep Requirements?
Amazon FBA prep requirements are the packaging, labeling, and safety rules every unit must meet before Amazon's fulfillment center accepts it into inventory. They cover product condition (new vs used), category-specific prep (apparel, toys, electronics, food, liquids, fragile, sharp items, baby products, jewelry, shoes, bags), FNSKU barcode placement, polybag suffocation warnings, case-ready vs individual packaging, carton and pallet limits, and hazmat classification. A unit that fails any rule is returned, relabeled at the seller's cost ($0.20–$0.50/unit), or — for safety violations — the ASIN is suspended. The full checklist below mirrors Amazon's 2026 prep guidance and is calibrated for China-side prep, where the same work costs 60–80% less than a US prep center.
Prep by Product Condition
Amazon distinguishes prep by condition. New products (the default for FBA private label) follow the full category prep rules below. Used products require a condition label (Used – Like New, Very Good, Good, Acceptable), individual polybagging so the condition is visible, and a seller note explaining any flaws. Used products cannot use manufacturer barcodes and must carry FNSKU labels. For most China-sourced FBA inventory, you are shipping New, so focus on the category matrix below.
Prep by Product Category (2026 Matrix)
Amazon assigns a required prep type and warning label to every category. Use this matrix to build your prep SOP before production.
| Category | Prep Type | Special Requirement | Warning Label |
|---|---|---|---|
| Apparel / textiles | Polybag | Sealed, 1.5 mil min | Suffocation warning (if opening ≥5″) |
| Toys & games | Polybag + label | Small parts bagged separately | Choking hazard (under 3) |
| Electronics | Polybag + FNSKU | Battery/hazmat label if Li-ion | Battery / FCC marks |
| Food & beverage | Expiration + lot | YYYY-MM-DD, 90-day shelf life | Ingredient / allergen |
| Beauty / cosmetics | Expiration + seal | Tamper-evident seal | Ingredient list |
| Liquids | Leak-proof bag | Upright, absorbent liner | None (unless hazmat) |
| Fragile (glass/ceramic) | Bubble wrap + carton | 5mm bubble, double-wall | “Fragile” optional |
| Sharp items | Capping + polybag | Blade tip capped | “Sharp” warning |
| Baby products (0–3) | Polybag + CPC | CPSIA tracking label | Choking + suffocation |
| Jewelry | Polybag + insert | Tarnish-resistant bag | None |
| Shoes | Shoe box + polybag | Box protected in bag | None |
| Bags / wallets | Polybag | Stuffing to retain shape | Suffocation (if ≥5″) |
For China-side execution of each row, see FBA prep service in China.
Labeling Requirements
Labels are the most common reason for FBA receiving failures. Follow these rules:
- FNSKU barcode — on every unit, 600-dpi thermal, flat surface, 1 inch from edges/folds, factory UPC fully covered, scan-tested.
- Choking-hazard warning — on any toy or product with small parts intended for children under 3. Text: “WARNING: CHOKING HAZARD – Small parts. Not for children under 3 yrs.”
- “Ready to Ship” sticker — on case-ready units that Amazon can ship to the customer without opening (e.g., factory-sealed retail boxes with UPC).
- “This is a set” sticker — on bundles so Amazon's FC team does not separate the pieces.
- Expiration / lot code — on food, beverage, beauty, and supplements in YYYY-MM-DD format, printed not handwritten, 90-day minimum shelf life at receipt.
Polybag Requirements
Polybagging is required for apparel, loose parts, toys, and any item that could spill or be damaged. The rules are non-negotiable:
- Opening ≥5 inches (12.7 cm) → English suffocation warning printed on the bag.
- Bag thickness ≥1.5 mil to prevent tearing.
- Bag must be sealed (heat-seal or tape) — no open-top bags.
- FNSKU barcode must be visible through the transparent bag; do not cover it with tape.
- If the product has its own barcode, cover it with the FNSKU label before bagging.
Packaging: Case-Ready vs Individual
Amazon recognizes two packaging states. Case-ready (also called manufacturer-barcode or stickerless) means the unit ships in its factory retail box, the UPC is registered with Amazon, and no polybag or FNSKU is needed — Amazon scans the UPC directly. Individual prep means each unit gets a polybag, FNSKU label, and any required warning labels. Private-label products almost always use individual prep because the factory UPC is not registered in Brand Registry. Case-ready is common for name-brand wholesale. Bundles always need individual prep plus a “This is a set” sticker.
Carton & Pallet Rules
After units are prepped, they move to cartons and pallets. Amazon enforces these hard limits:
- One SKU per carton (mixed-SKU cartons need Amazon's case-ready approval).
- Carton weight ≤ 50 lb / 22.7 kg (70 lb allowed only if the carton contains a single oversized unit).
- Box must pass the ISTA 6-Amazon drop test — use double-wall corrugated for over 2 kg.
- Do not tape two boxes together to make a larger box.
- FBA box ID label on two sides, not over a seam or flap.
- Pallet: 40×48 inches, max height 72 inches including pallet, 4-side labels with Amazon shipment ID.
FBA vs FBA-SFN Prep Differences
Amazon's Seller Fulfilled Network (SFN) (formerly FBM) has far lighter prep requirements because you ship directly to the customer, not through Amazon's FC. SFN only requires that the package arrives intact and the shipping label is correct — no FNSKU, no polybag rules, no carton weight limits (within carrier rules). FBA prep is stricter because Amazon's automated FCs scan, sort, and store your inventory, so every unit must be machine-readable and damage-resistant. If you run a hybrid FBA + SFN model, keep two prep SOPs and label inventory accordingly. For SFN direct shipping from China, see the FBA shipping guide's SFN section.
Hazmat Identification & the FBA Dangerous Goods Program
Hazardous materials (hazmat) must be flagged at SKU creation, before you ship, under Amazon's FBA Dangerous Goods (Hazmat) Program. Common hazmat from China:
- Lithium batteries (power banks, Bluetooth speakers, toys) — need UN38.3 test report, SDS, and UN3480/UN3481 classification.
- Aerosols and pressurized cans — need proper DOT/IATA packaging.
- Flammable liquids (nail polish, perfume, rubbing alcohol) — flash-point classification required.
- Cosmetics with chemicals — may require SDS even if not strictly hazmat.
Non-flagged hazmat is refused at the FC and may trigger an ASIN suspension or account-level hazmat review. Before listing, run your product through Amazon's Hazmat Classification Tool in Seller Central and confirm with the factory that the SDS is available. See the full list in Amazon restricted products from China.
Worked Example: Electronics Product Prep Checklist
A private-label Bluetooth speaker (Li-ion battery, FCC-regulated) from a Shenzhen factory, 500 units, shipped DDP to LAX9. The prep checklist:
| Prep Step | Requirement | Status |
|---|---|---|
| Polybag unit | 1.5 mil, sealed, FNSKU visible | ✓ Done |
| FNSKU label | 600-dpi thermal, 1″ from edge, covers factory UPC | ✓ Done |
| Battery / hazmat label | UN3481 label on unit + carton | ✓ Done |
| FCC mark | Printed on retail box | ✓ Done |
| Carton | Single SKU, 24 pcs/carton, 18 lb (under 50 lb) | ✓ Done |
| FBA box ID label | 2 sides, not over seam | ✓ Done |
| Pallet | 40×48″, 60″ height, 4-side shipment-ID labels | ✓ Done |
| Hazmat flag | Flagged at SKU creation, SDS uploaded | ✓ Done |
Total China prep cost: polybag $0.15 + FNSKU $0.05 + battery label $0.03 = $0.23/unit × 500 = $115. A US prep center would charge ~$1.00/unit = $500. Savings: $385.
FBA Prep Mistakes and Consequences
| Mistake | Consequence |
|---|---|
| Missing suffocation warning on ≥5″ polybag | Carton refused; $25–$100 return + re-ship fee |
| FNSKU not covering factory UPC | Inventory mis-routed to wrong ASIN; stranded stock |
| Overweight carton (over 50 lb) | $25–$50 fee per carton; units may be damaged |
| No choking-hazard warning on under-3 toy | ASIN suspended; safety recall risk |
| Undeclared hazmat (Li-ion) | Shipment refused; ASIN suspended; account-level review |
| Taping two boxes together | Boxes returned at seller's cost |
| Handwritten expiration date | Units rejected; must reprint and re-ship |
Frequently Asked Questions
1. Is FBA prep required for every product?
Yes. Every FBA unit must have an FNSKU barcode (or Amazon's manufacturer barcode), and most categories need additional prep: polybag for apparel and loose items, bubble wrap for fragile, choking-hazard warning for toys under 3, expiration dating for food and beauty. Non-compliant units are returned or relabeled at the seller's cost.
2. When does a polybag need a suffocation warning?
Amazon requires an English suffocation warning printed on any polybag with an opening of 5 inches or larger. The warning must be printed on the bag itself, not applied as a sticker, and the bag must be at least 1.5 mil thick and sealed. The FNSKU barcode must be visible through transparent material.
3. Where should the FNSKU label be placed?
The FNSKU must be on a flat surface, at least 1 inch (2.5 cm) from edges, folds, and seams, and must fully cover the original factory barcode so Amazon scans only one code. Use 600-dpi thermal labels and scan-test before sealing cartons.
4. How does hazmat work with Amazon FBA?
Hazardous materials (lithium batteries, aerosols, flammables, cosmetics with chemicals) must be flagged at SKU creation and shipped via Amazon's FBA Dangerous Goods (Hazmat) Program. You need SDS/MSDS, UN38.3 for batteries, and proper packaging. Non-flagged hazmat is refused at the FC and may suspend the ASIN.
5. Can I ship products to FBA without prep?
Only if the product is case-ready and meets Amazon's manufacturer-barcode (stickerless) criteria — meaning the factory UPC is registered and the unit needs no polybag, bubble wrap, or warning labels. Most private-label SKUs and all apparel, fragile, and loose-parts products require prep before shipping.
6. How much does FBA prep cost?
In China, polybag + FNSKU label costs $0.10–$0.30 per unit, bubble wrap $0.15–$0.30, taping $0.05–$0.10. A US prep center charges $0.50–$1.50 per unit. For a 1,000-unit order, China prep is roughly $180–$300 vs $750–$1,500 in the US. See the cost breakdown in FBA prep in China.
Conclusion
Amazon FBA prep requirements in 2026 are a layered compliance checklist: FNSKU barcode on every unit, suffocation-warning polybags for openings ≥5 inches, category-specific warning labels (choking hazard for under-3 toys, expiration dates for food/beauty, hazmat for batteries), case-ready vs individual packaging decisions, carton limits of 50 lb with ISTA 6-Amazon strength, and 40×48 × ≤72″ pallets with 4-side labels. Get any one of these wrong and Amazon returns, relabels, or suspends the ASIN. The most cost-effective way to meet every rule is China-side prep at the factory or prep warehouse, where the same work costs $0.10–$0.30/unit vs $0.50–$1.50 in the US. Before you ship, run through the category matrix above, confirm hazmat status, and scan-test every FNSKU. Get a free FBA prep checklist and quote from Yeatru — we'll map your SKUs, flag gaps, and quote China-side prep with QC photos.
