Amazon FBA Packaging Requirements: The Complete Guide for Product Sellers

If you've ever had a shipment rejected at an Amazon fulfillment center — or worse, received a chargeback — you already know that FBA packaging compliance is not optional. Amazon's requirements are specific, non-negotiable, and apply to every single unit before it enters their warehouse.

This guide covers everything sellers and their packaging suppliers need to know about FBA packaging requirements: labeling, materials, poly bags, suffocation warnings, and how to work with a factory to get it right the first time.

What Are Amazon FBA Packaging Requirements?

Amazon FBA (Fulfillment by Amazon) requires that all products sent to fulfillment centers meet strict packaging and prep standards. These standards exist to protect products during storage and shipping, ensure accurate inventory tracking, and keep the warehouse process efficient.

Failing to comply results in:

Shipment refusal at the receiving dock
Unplanned prep service fees (Amazon charges to fix non-compliant units)
Account suspensions in severe cases

The requirements fall into five main categories: labeling, poly bag rules, box and case requirements, bubble wrap and protection, and hazmat/dangerous goods.

1. FNSKU Labels: The Most Important Requirement

Every unit entering Amazon's warehouse must have an FNSKU (Fulfillment Network Stock Keeping Unit) label. This is Amazon's internal barcode that identifies your specific product listing.

Key rules:

The FNSKU label must be scannable and placed on the outside of the product packaging
It must cover (or replace) any existing manufacturer barcodes (UPC, EAN) to avoid scanning confusion
Label size: minimum 1" x 2" (25mm x 50mm)
Print quality: laser-printed or thermal-printed; no inkjet printing that could smear
Placement: flat surface, not on a curved edge or seam

Factory tip: The cleanest solution is to have your FNSKU printed directly on your product box during manufacturing, eliminating the need for a separate label application step at the 3PL or warehouse. This requires coordinating with your packaging supplier before artwork is finalized.

2. Suffocation Warning Labels

Any poly bag, plastic bag, or plastic film packaging with an opening larger than 5 inches (measured around the perimeter) requires a suffocation warning label. This is mandatory regardless of how thick the bag is or what country you're shipping from.

Required warning text:
"WARNING: To avoid danger of suffocation, keep this plastic bag away from babies and children. Do not use this bag in cribs, beds, carriages or playpens. This bag is not a toy."

Label requirements:

Font size must be at least 10 point for bags under 25" perimeter; 14 point for larger bags
Must appear on the bag itself — not a hangtag
Can be printed on the bag (preferred) or applied as a sticker

3. Poly Bag Requirements

If your product requires a poly bag for protection (small parts, apparel, liquids, etc.), Amazon has specific rules:

Bags must be at least 1.5 mil thick (thinner bags are not accepted)
The bag must be sealed — not just folded
A scannable barcode must be visible through the bag, or affixed to the outside
The suffocation warning must be on the bag
Bags with handles are not permitted in some categories

How to handle this with your factory: Specify poly bag thickness in your purchase order. 2 mil is the industry standard for most consumer goods. Ask your factory to seal using heat sealing, not self-adhesive flaps, for stronger closure.

4. Box and Carton Requirements for Master Cartons

When shipping multiple units to Amazon (a case pack), the outer shipping box (master carton) must meet these standards:

Must use a new, single-wall corrugated box — used boxes and low-quality boxes are rejected
Maximum weight: 50 lbs (23 kg) per box
Maximum dimensions: 25 inches on any side
No protruding staples, metal fasteners, or strapping
A box content label must be on two adjacent sides, listing ASIN, FNSKU, quantity, and shipment ID

Note for Chinese factories: The 50 lb weight limit is critical for dense products like electronics or metal hardware. When placing packaging orders, specify this weight limit so your factory designs a carton quantity per box that stays compliant.

5. Fragile and Bubble Wrap Requirements

Each unit must survive a 3-foot drop test without damage
Fragile items require bubble wrap with at least 5 air cells of cushioning on all six sides
Liquids: must be in leak-proof containers; bottles must pass a "shake test" (no leakage)
Sharp items: must be boxed or covered so they cannot cut through the outer packaging

6. Hazmat and Battery-Specific Rules

If your product contains a lithium battery (phones, earbuds, power banks, drones), it falls under Amazon's Dangerous Goods (hazmat) program:

You must submit a Safety Data Sheet (SDS) and battery information to Amazon before sending inventory
Inner packaging must isolate terminals to prevent short circuits
Outer packaging must bear UN3480 (lithium ion batteries) or UN3090 (lithium metal batteries) markings if shipping by air

7. How to Design FBA-Compliant Packaging at the Factory Level

The most efficient approach is to build FBA compliance into your packaging design before production, not after.

Step 1 — Register your product on Amazon first. You need your ASIN and FNSKU barcode before finalizing artwork.

Step 2 — Send your packaging supplier the full spec sheet. Include: FNSKU barcode file (128-bit), suffocation warning text, required label dimensions, and any Amazon category-specific requirements.

Step 3 — Request a pre-production sample. Verify that barcodes scan correctly, labels are positioned on flat surfaces, and poly bag thickness meets minimum requirements.

Step 4 — Confirm the master carton spec. Provide your packaging supplier with the required case quantity per box and confirm the total box weight will stay under 50 lbs.

Step 5 — Include a QC checklist. Before mass production ships, have your factory or inspection team verify FNSKU placement, suffocation warnings, and weight per carton.

Common FBA Packaging Mistakes (and How to Avoid Them)

Mistake	Consequence	Fix
FNSKU not covering manufacturer barcode	Amazon scans wrong SKU, inventory mismatch	Print FNSKU over UPC during production
Poly bag thinner than 1.5 mil	Shipment rejected, prep fee charged	Specify 2 mil minimum in PO
No suffocation warning on bag	Non-compliance flag, potential removal	Print warning on bag film
Carton over 50 lbs	Rejected at receiving	Calculate unit weight × quantity before finalizing case pack
Label placed on curved surface	Won't scan	Move label to flat panel during dieline design

FAQ

Does Amazon check every box at the fulfillment center?
Amazon spot-checks shipments and uses automated scanning. Non-compliant items are flagged and may be quarantined or returned at your expense.

Can my 3PL apply FNSKU labels instead of the factory?
Yes, but it adds cost ($0.10–$0.20 per unit at most 3PLs). Having your factory print the label directly during production is more cost-effective for orders over 500 units.

What's the difference between FBA and FBM packaging requirements?
FBM (Fulfilled by Merchant) packaging follows standard carrier guidelines (ISTA, ASTM). FBA has stricter requirements set by Amazon specifically. If you ship both FBA and FBM, design your packaging to meet FBA standards — it's the higher bar.

How do I know which prep category my product falls under?
Log into Seller Central → Inventory → Add a Product → Enter your ASIN. Amazon will display the required prep type (poly bag, bubble wrap, tape, etc.) based on your product category.

Ready to Source FBA-Compliant Packaging from a Factory?

Designing compliant packaging from the start avoids costly prep fees and rejected shipments. Huandao Packaging has worked with Amazon sellers and private label brands across consumer electronics, personal care, and household goods — building FNSKU barcodes, suffocation warnings, and compliant case configurations directly into production.