ISTA 6 Amazon: what the test is, who must pass it, and how a pack gets through

Amazon's transit test decides whether a product ships in its own box. What ISTA 6 checks, who must pass it, when you can self-test, and what makes a pack fail.

Filed under Custom packaging

Short answer: ISTA 6 Amazon is the transit test Amazon uses to decide whether a product can ship to a customer in its own packaging. It was written by the International Safe Transit Association (ISTA) with Amazon, and it runs a packed product through the drops and handling of Amazon's network. Amazon now calls the program Ships in Product Packaging (SIPP); you will still see the older names SIOC and Frustration-Free Packaging. Small, sturdy packs can often be self-tested. Fragile, heavy, granular or sharp ones need a report from an approved ISTA-6 lab.

If you sell through Amazon, sooner or later someone will ask whether your box is "ISTA 6 certified." This note explains what ISTA 6 Amazon actually tests, who is required to pass it, what it costs you, and the design changes that get a retail pack through the drops. For the wider spec side of a retail box, see our guide to custom packaging solutions.

What ISTA 6 is, and why Amazon has its own version

ISTA publishes numbered series of transit tests. Its general simulation tests (the 3-Series) "Provide a simulation of the damage-producing motions, forces, conditions, and sequences of transport environments." The 6-Series is different. ISTA describes these member performance tests as "Created by an ISTA member or in cooperation with ISTA to establish unique requirements or to reflect their particular conditions of distribution." Amazon's are named 6-AMAZON.com; there is also one for Sam's Club.

There are two Amazon procedures. "Amazon has partnered with ISTA to develop two 6 Series test methods to help simulate a journey of a package through Amazon’s fulfillment network." One is for products that ship in their own container (SIOC). ISTA's summary of that one: "It challenges the capability of both package and product to withstand the hazards normally encountered from receipt at an FC through handling and transport by a carrier." The other, Over Boxing, is for products Amazon will put inside its own box before delivery.

The names have moved around. Amazon's packaging FAQ asks whether SIPP is the same as Frustration-Free Packaging or SIOC: "Yes, we rebranded to Ships in Product Packaging (SIPP) to better reflect the program’s objective." And for sellers: "No, the packaging certification standards for SIPP are the same as SIOC." So a lab report to "ISTA 6-Amazon.com-SIOC" is still the right document for SIPP.

Who has to pass it

For many products ISTA 6 is optional and pays for itself through Amazon's incentives. For larger vendor products it is not optional. Amazon's FAQ for vendors says that "Products with packaging dimensions > 18" x 14" x 8" or weight greater than 20 lbs that do not belong to excluded categories" must be certified as SIPP, and that "Eligible products that are not certified will incur a chargeback ranging from $1.80-$4.40 per unit; fees are based on the product’s shipping weight."

Sellers using Fulfillment by Amazon have a different push. Amazon offers lower FBA fees for enrolled products, and since January 15, 2026 the US has new packaging fees for small and large bulky products. "These fees will apply to items not enrolled in Ships in Product Packaging that require additional packaging."

Either way, the test is the gate: "To be certified SIPP, all packaging must pass physical performance tests."

Self-test or lab: which applies to your product

Amazon lets some products be self-tested. On its self-testing page, a product in rigid packaging that weighs under 50 lb and is not fragile qualifies, as does a product in flexible packaging that is not fragile, granular or sharp. Everything else goes to a lab: "You will need to submit a lab report from an ISTA-6 lab in Amazon’s APASS (Amazon Packaging Support and Supplier Network) network or the Amazon Packaging Lab."

The self-test is simple to describe and unforgiving to run. Amazon's instructions number the faces of the box, then drop it 17 times onto set faces, edges and corners, 15 times from 18 inches and twice from 36 inches. "Use this same package throughout the entire test." One box takes every drop, so damage builds up the way it does in a real network.

Fragility changes the sample count. A 2020 explainer from Micom Laboratories, an APASS lab, puts it this way: "If products are deemed non fragile, only one sample needs to be tested." "For fragile products, five samples of each format are to be tested and yield a positive outcome." It also notes that "All products containing liquids are deemed to be fragile." Anything in glass or with liquid inside should be planned as a lab job from day one.

What it costs you

Amazon is direct about its own fees: "There are no Amazon fees to enroll in SIPP." The FAQ adds that "there may be additional costs if your product packaging is required to be tested at an ISTA-6 lab."

We have not seen a published price list from Amazon's lab network, so treat any number you hear as a quote for one project. What moves the cost is predictable:

• Which procedure and type. SIOC or Over Boxing, and the product's weight and size class, set how much of the sequence the lab runs.
• Samples. One pack for a non-fragile product, several for a fragile one, and every product variant you cannot group under a tested one.
• Retests. A failed pack means a design change, new samples from the factory and another lab slot. This is usually the biggest cost, measured in weeks as much as dollars.
• The packaging change itself. Heavier board, a better insert or a new closure costs money on every unit you ship.

Amazon also lets you test one product and certify physically similar variants with it, which cuts lab work for a range of sizes. Check how Amazon groups your variants before you book the lab.

Why packs fail, and the fixes

Packaging engineers list the same failure points. A Pacific Box guide names, among others: "Box crush and panel failure under stacking loads." "Tape or glue adhesion issues that cause seams to split." "Internal shifting that damages both product and packaging."

From the factory side, the fixes we work through with a packaging supplier are:

1. Stop the product moving. Most drop failures start inside the box. A die-cut insert, molded pulp or a formed tray that holds the product off the walls and corners does more than heavier board.
2. Protect the corners and edges. Most of the 17 drops land on an edge or a corner. Corner pads, a fold-over flap or a stronger flute on the shipper go where the hits land.
3. Close it properly. Tape and glue seams fail under repeated drops. Specify the tape width and pattern, or a crash-lock bottom, and test with the exact tape and adhesive the line will use.
4. Pick board for the stack, not just the drop. Compression matters once cartons are stacked in a truck or on a pallet. Ask for the board grade and edge crush rating in the quote.
5. Test the production pack. A hand-made prototype passes; the production box made on the factory's line, packed by its workers, is what Amazon will see.

That last point matters after certification too. "No, certifications do not expire, but products can be decertified from the program." "Decertifications commonly occur when a product has exceeded damage or non-compliance rates." Amazon's own example of a decertified product is one where "the vendor uses a new adhesive to seal the packaging and does not retest with the new seals." Any change to the board, insert, tape or glue after the test is a reason to retest.

Where this fits in a production program

The order of work is the same on every pack: dieline, physical sample on production board, transit test, then the production run, checked on the line. Test before you approve the mass run, not after the first container lands at a fulfillment center. Retail boxes on two programs Jack managed passed ISTA 6-Amazon.com-SIOC at an accredited third-party lab; the details are on our certifications page, and the packs themselves are on our custom packaging page. Blister cards and clamshells raise their own questions, covered in blister vs clamshell packaging.

If you have a product headed to Amazon and are not sure whether it can self-test, needs a lab, or needs a new pack first, send Jack a photo of the pack and the product weight. He will tell you plainly which route applies and what the factory needs to change.

Straight answers

What is ISTA 6 Amazon?

ISTA 6-Amazon.com is a pair of transit test procedures that the International Safe Transit Association developed with Amazon. They simulate the handling a packed product gets in Amazon's fulfillment network. One covers products that ship in their own container (SIOC, now called Ships in Product Packaging or SIPP); the other, Over Boxing, covers products Amazon puts in its own box.

Is SIPP the same as SIOC?

Yes. Amazon rebranded Ships in Own Container (SIOC) and Frustration-Free Packaging to Ships in Product Packaging (SIPP). Amazon's FAQ says the packaging certification standards for SIPP are the same as SIOC, so an ISTA 6-Amazon.com-SIOC lab report still applies.

Do I need an ISTA 6 lab, or can I self-test?

Amazon allows self-testing for products in rigid packaging that weigh under 50 lb and are not fragile, and for products in flexible packaging that are not fragile, granular or sharp. Heavier, fragile, granular or sharp products need a report from an ISTA-6 lab in Amazon's APASS network or from the Amazon Packaging Lab.

Which Amazon vendors must certify their packaging?

Amazon's FAQ says vendor products with packaging larger than 18 x 14 x 8 inches or heavier than 20 lb, outside excluded categories, must be certified as SIPP. Eligible products that are not certified incur a chargeback of $1.80 to $4.40 per unit, based on shipping weight.

How much does ISTA 6 Amazon testing cost?

Amazon charges no fee to enroll in SIPP. Lab testing is quoted per project by the lab; the price depends on the procedure, the product's weight and size class, how many samples are needed (fragile products need more), and how many retests a failed design needs. Packaging changes needed to pass add a per-unit cost.

How this note was made: researched and drafted with AI assistance, checked against the sources listed below and edited at JCH Design & Manufacturing.