By Bernardo Campelo, Forbes Business Council E-Commerce Leader, Amazon SPN Certified provider, Amazon SP-API authorized partner, and Founder of PrepVia.
Picture the kit you want live by November. A plush toy, kids' Bluetooth headphones, a lip balm, a two-capsule supplement sample and a card of coin cells. Every component already sells on Amazon with clean documents. You want a few thousand of them in three weeks, under one new GTIN.
The first question I ask is not about the box. Who is the manufacturer of this kit? The call usually goes quiet. Every document in your folder belongs to a component, and the kit has none.
That is the whole problem. A kit of regulated products is a new product, to Amazon and to the regulator. Your kit needs its own compliance file, and the file has to exist before your prep center opens the first carton.
The 60-second version
A regulated kit is a new product with a new ASIN, and the component documents do not cover it by themselves. Amazon asks you for separate documents and images for each product inside a set or bundle of toys or supplements. The Consumer Product Safety Act counts assembling as manufacturing, and the FCC can make the assembler the responsible party. Name who certifies your kit, build its file item by item, and send it to your prep center before the first build.
Why a Kit Is a New Product, and Who Answers for It
Start with Amazon. Its set creation requirements say items you sell as one unit must be bagged, bubble wrapped or boxed, labeled as a set, and carry a single scannable barcode for the set ASIN, with component barcodes covered. And since January 1, 2026, Amazon no longer offers prep and item labeling for US FBA shipments. Your kit arrives built, or it arrives wrong.
And your new ASIN carries its own compliance burden. Amazon's children's toys policy and dietary supplement policy both ask you, for a set or bundle, for separate documents and images for each product included. Its direct product validation page tells you to work with your testing, inspection and certification (TIC) provider on bundles and multi-packs.
Then the regulator. The Consumer Product Safety Act defines manufactured as to manufacture, produce, or assemble, and a manufacturer as any person who manufactures or imports a consumer product. The table puts five regimes side by side. It does not answer for your kit; it shows the question to put, in writing, to your counsel or certifying lab.
| Regime | What the text says | Question to put in writing |
|---|---|---|
| Children's products (CPSC) | Imports: the importer certifies. Made in the US: the manufacturer, or the private labeler unless the manufacturer issues it (16 CFR 1110.7). | Is the kit made in the US, and who is its manufacturer or private labeler? |
| RF devices under SDoC (FCC) | For equipment assembled from component parts, the assembler is the responsible party; whoever modifies it without authority becomes responsible (47 CFR 2.909). | Does any build step assemble or modify the device? |
| Pesticides (FIFRA) | Production only in an EPA-registered establishment (7 U.S.C. 136e); produce includes package, repackage, label and relabel (40 CFR 167.3). | Does the kit change the product's container or labeling? |
| Cosmetics (MoCRA) | Solely packaging or repackaging is outside the facility definition, but filling a container is not packaging; the responsible person is the manufacturer, packer or distributor named on the label (21 U.S.C. 364). | Whose name goes on the kit label? |
| OTC drugs (FDA) | Repack means moving a finished drug into a different container; relabel excludes labels affixed solely for delivery or inventory management (21 CFR 207.1). | Is the kit box a new container for the drug? |
Who may package the kit is a second Amazon question, now with a date. Amazon's product bundling policy accepts a hard kit bundle not packaged by the original manufacturer or brand only as a gift basket in a gifting browse node, a camera bundle, or with a letter of authorization from the brands of all products inside. Amazon announced that bundles still noncompliant after January 11, 2027 are deactivated, so a November kit with brands you do not own is on the clock. Our kitting vs bundling breakdown covers that rule.
Children's Products: The Certificate Names One Product, and It Is Not the Kit
A Children's Product Certificate is not a blessing on a toy in general. Under 16 CFR 1110.11, it identifies the finished product by a unique identifier such as a GTIN, UPC or SKU. Under 16 CFR 1110.13, each certificate describes only one product and goes to each distributor or retailer. For US-made products, it is due on or before distribution.
Now open your folder. The plush toy certificate names the plush toy. The headphone certificate names the headphones. The kit GTIN appears on none of them. Whether your kit needs its own certificate is your certifier's call, but you cannot skip the question. If your certifier issues one, 16 CFR 1110.11 also asks where and when the finished product was manufactured, produced or assembled, so your build site and date belong in the file.
The rule that makes a kit certificate practical is 16 CFR 1109.5. Your finished product certifier may rely on other parties' component test reports or certificates if the tested part is identical in all material respects. It must exercise due care, rely only on traceable parts, and receive documentation naming the lot tested, the dates, the lab and the reports. Component tests cannot stand in where a rule requires testing the finished product.
Timing is where your prep center comes in. The same section allows component testing before final assembly, provided nothing in assembly can make the product noncompliant. Your kit build sits exactly in that window. So anything your build adds that a child can touch, a ribbon, a pouch, a sticker sheet, goes to your certifier first.
If your components are imported, the importer certifies them, and since July 8, 2026 the CPSC requires eFiling of certificate data at entry. The CPSC also says eFiling does not apply to domestic manufacturers. A kit you build in Miami from imported parts touches both sentences, so settle it in writing. Our overview of customs documents for an FBA import covers the entry side.
If your kit falls under Amazon's toys policy, you need a CPSC-accepted lab report issued within the previous 12 months. You also need a Children's Product Certificate and a permanent tracking label. The policy warns that a product with play value or appeal to children may fall under it even if it is not designed as a toy, and it covers all plush toys regardless of age grading. Your adult gift kit with a squishy toy in it can land here.
Tracking labels are the last trap. 15 U.S.C. 2063(a)(5) requires permanent marks on a children's product and its packaging, to the extent practicable, identifying the manufacturer or private labeler, the place and date of production, and the batch. Decide who prints which marks on your kit box. And never let your FNSKU land on a component's tracking label.
Batteries: The Kit Changes the Battery Answers
Batteries turn a harmless kit into a dangerous goods review. Amazon's dangerous goods information page says you must provide hazmat information when you list a new product on FBA, and Amazon may then ask you for a safety data sheet (SDS) or exemption sheet. Incomplete or conflicting answers can block your product from FBA. The same page says a bundle or kit with multiple chemical-based products needs an SDS for each product inside it.
Your kit answers the battery questions differently. Amazon asks whether the product has multiple battery-powered components, and whether the battery is packed with the equipment, contained in it, or standalone. A battery sold with items it does not power is answered as standalone. Add spare coin cells that power nothing in your kit, and you change that answer for the whole ASIN.
For lithium, Amazon's lithium battery page requires a UN 38.3 test summary at ASIN setup and a battery exemption sheet. Its US table approves lithium-ion cells up to 60 Wh and batteries up to 300 Wh. Your kit is a new ASIN setup, so it needs these documents even when every component has them.
Two more rules settle kit designs early. Amazon's electronics policy prohibits six cylindrical lithium-ion cell types, including 18650 and 21700, and all products that include them, even when the battery is not inside the product. Your flashlight kit with a spare 18650 is out. Amazon's battery packaging page requires rigid packaging, prohibits zipper-sealed bags and shrink wrap, keeps terminals from touching, and requires child-resistant packaging with a warning for button cells.
The set creation page accepts heat-sealed shrink wrap to hold a set together. Shrink wrap on its own is on the prohibited list, while a box closed with shrink wrap can qualify if the cells cannot roll and the terminals cannot touch. Design the insert that holds the cells before you design the wrap.
Button and coin cells add a federal layer. 16 CFR part 1263, under Reese's Law, covers any consumer product containing or designed to use one, whether the battery is included or sold separately, and requires ANSI/UL 4200A. It also sets warnings for the packaging of those products, and toys that meet 16 CFR part 1250 are exempt. If your kit box becomes the retail package, ask your certifier whether the warnings go on it. Our guide to what unblocks an Amazon hazmat review covers the review.
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Supplements, Food, Cosmetics and OTC: Sealed Means Sealed
One line governs these categories: sealed in the original manufacturer's packaging. Amazon writes it into the supplement policy, the food and beverage policy and the cosmetics policy. The same pages ask for separate images per product in a set or bundle. The safe rule for your build: every unit enters the kit sealed by its manufacturer.
If your kit holds a supplement, you carry the heaviest file, validated through an Amazon-authorized TIC provider. Amazon also prohibits selling sexual enhancement and weight loss supplements in single- or double-pill packs. A two-capsule sample of a weight loss formula in your kit is exactly that pack. The same policy bars listing images that show a supplement labeled as a tester or not for retail sale, so check what your sample's label says.
Food adds one more offer condition: units inside a larger, sealed and labeled box cannot be sold individually. Pulling single bars from a sealed multipack to drop one into each of your kits collides with that line.
Cosmetics need packaging that displays matrix codes, lot numbers or serial numbers, so the carton with the lot code stays on your unit. A product that is both a cosmetic and a drug, such as a sunscreen moisturizer, must meet both sets of rules. Under the law, 21 U.S.C. 364(3) keeps establishments that solely package or repackage cosmetics outside the facility definition, but filling a container is not packaging. If you decant a serum into travel minis, that is filling. What follows is a question for your FDA counsel, not a packing spec.
OTC drugs are where I push hardest for a written answer. 21 CFR 207.1 defines repack as moving a finished drug into a different container, and excludes inventory-management labels from relabel. Whether a sealed OTC carton inside a kit box has been repacked is a regulatory judgment. Neither I nor your prep center should make it. Get it from the labeler or your counsel before the build is quoted.
Pesticide Claims and Radio Devices: The New Detail Page Is the Risk
Some kits turn regulated because of what your listing says. Amazon's pesticides policy says a product can be classified as a pesticide if it claims, even indirectly, to act against pests, including bacteria and mold, anywhere in the detail page text or images. Your kit is a new detail page. A germ-fighting travel kit title can pull your ordinary products into the pesticide policy.
Every pesticide listing needs a Pesticide marking attribute with an EPA registration or establishment number, or a declared exemption. Only US residents may list pesticides. Amazon prohibits pesticide products in broken packaging or sold in a quantity different from the EPA-approved label. If you split a registered multipack whose EPA label sits on the outer pack, you do both.
Radio devices work the other way: the product is regulated, and the build can disturb it. Amazon's radio frequency devices policy requires the appropriate FCC authorization, lists Bluetooth and Wi-Fi devices among those that need it, and keeps claims inside approved frequency ranges. Under 47 CFR 2.909, whoever modifies equipment without authority becomes responsible. For a device authorized under SDoC, 47 CFR 2.1077 has the compliance statement ship with the product, in the manual or on a separate sheet. So your device stays sealed, with its manual.
The Matrix: What Each Regulated Component Adds to the Kit
Use this when your bill of materials arrives, one row per regulated component. Every row closes before the build is scheduled.
| Component | Amazon asks on the kit ASIN | Prep center receives before build | Build trap |
|---|---|---|---|
| Children's product or play value | Lab report within 12 months, CPC, tracking label, per-product documents via TIC | Named certifier, component certificates with lots, written kit decision | Untested ribbon or pouch; FNSKU over a tracking label |
| Batteries | Battery answers for the whole kit, SDS or exemption sheet, UN 38.3 for lithium | Completed answers, documents, photo spec of cell packaging | Spare cells that power nothing; cells loose under shrink wrap |
| Dietary supplement | Sealed original packaging, per-product documents, TIC validation | Sealed units, lot and expiration per unit | Samples from a bulk bottle; one- or two-pill weight loss packs |
| Food | Sealed original packaging, per-product images | Retail units labeled for individual sale | Singles pulled from a sealed multipack |
| Cosmetic | Sealed packaging with visible lot or matrix code | Units in outer cartons, responsible person named | Removing the lot-coded carton; decanting |
| Cosmetic-drug, such as sunscreen moisturizer | Cosmetic and drug requirements both apply | Written answer on the repack question | Opening a retail carton; covering drug facts |
| Pesticide claim | Pesticide marking attribute with EPA numbers or exemption | Kit copy cleared, EPA numbers per component | Antibacterial in the title; split multipacks |
| RF device | FCC authorization, approved frequency claims only | Authorization type and grantee or US responsible party per device | Opening the device box; dropping the manual |
The Kit Compliance File, Item by Item
This is the file I want from you before a regulated kit is quoted. You own it and you sign it. Your prep center builds to it and keeps a copy with the build record.
- Kit identity. Kit SKU, its own GTIN, the ASIN once it exists, photos of an approved golden sample.
- Bill of materials. Every component, inserts and pouches included, with its identifier and the lot planned for the run.
- Named parties. Kit certifier, FCC responsible party, cosmetic responsible person, EPA registrant, as applicable. Signed.
- Brand letters. For each brand inside that you do not own, the letter of authorization the bundling policy asks for, or the gifting browse node the kit will list in.
- Component documents. Each certificate or report, the lot and date it covers, and per-product images.
- Kit-level decision. The kit certificate, or the certifier's written reason why none is needed.
- Hazmat sheet. Battery answers for the whole kit, an SDS for each chemical-based product or the exemption sheet, UN 38.3 summary, cell packaging method.
- Label map. Where the FNSKU and set label go, which barcodes get covered, which marks stay visible.
- Sealed-unit list. Components that stay sealed. Nothing is opened, split or decanted without written instruction.
- Listing review. Title, bullets and images cleared for pesticide, drug and frequency claims, and for the bundling policy's title, bullet and image rules.
- TIC plan. Who files the test request form when Amazon notifies the kit ASIN, and which samples are held.
- Build record. Date, site, units, component lots, photos, exceptions, and who records each field. It goes to the certifier.
- Stop rules. Unsealed unit, wrong lot, missing lot code, damaged battery pack: hold and ask, never substitute.
The TIC plan matters because of timing. Amazon's validation page says you can only file the test request form after a document request in Account Health, and a failed validation deactivates your products immediately. Our new ASIN launch timeline shows where compliance copy and sample approval sit before launch.
The build record matters because 16 CFR 1109.5 has certifiers and testing parties keep component documentation for five years, and the build record ties it to the units you shipped. Covering component barcodes is routine prep, explained in our note on FNSKU, UPC and manufacturer barcodes.
Now the honest part. A prep center can build to your written spec, count components at receiving, photograph an approved sample and hold anything that does not match your file. It cannot certify, test or decide compliance. PrepVia builds kits in Miami and ships them into Amazon. It does not certify, test or register products. Its facts page lists it as not an FDA-registered facility and lists lot-level recall tracking in a WMS as not offered, so agree in writing who records component lots for each run. If your components are imported, start with who the importer of record is.
Frequently Asked Questions
Does a kit of certified children's products need its own Children's Product Certificate?
That is your certifier's decision, and it should be in writing. Each certificate identifies one finished product, so component certificates do not name the kit. 16 CFR 1109.5 lets a certifier rely on component test reports with due care, traceability and full documentation, except where a rule requires testing the finished product.
Who is the manufacturer of a kit assembled at a prep center?
The Consumer Product Safety Act defines manufactured as to manufacture, produce or assemble, and 16 CFR 1110.7 assigns certification to the importer, manufacturer or private labeler. How that applies to your kit is a question for your counsel. PrepVia does not certify products or decide it.
Can I add spare batteries to a kit?
Only after you rerun Amazon's battery questions for the whole kit. A battery sold with items it does not power is answered as standalone, lithium needs a UN 38.3 summary at ASIN setup, and 18650-type cells are prohibited. Button cells also bring 16 CFR part 1263 into play.
Can a prep center split a multipack of supplements or snacks into kits?
Amazon requires supplements and food sealed in the original manufacturer's packaging, and says units inside a sealed, labeled box cannot be sold individually. Weight loss and sexual enhancement supplements cannot be sold in single- or double-pill packs. Plan your kits around sealed retail units.
Does the TIC provider review the kit or each component?
Amazon asks for separate documents and images for each product in a set or bundle, and tells sellers to work with their TIC provider on bundles and multi-packs. You can only file the request form after Amazon's document request.
Why is my kit listing flagged as a pesticide?
Amazon treats a claim to control bacteria, mold or other pests as a possible pesticide claim anywhere in the detail page text or images. Pesticide listings need EPA numbers in a Pesticide marking attribute or a declared exemption. Rewriting your kit copy is often faster than qualifying the kit.
Final Take
A kit feels like packaging work, and for unregulated products it mostly is. Put a toy, a battery, a supplement or a Bluetooth device inside, and your kit becomes a product with its own identifier, ASIN and review. Your component files are raw material for the kit's file. They are not the file.
The regimes do not agree on who answers for an assembled product. CPSC law counts assembling as manufacturing. The FCC can hand responsibility to the assembler or modifier. EPA rules under FIFRA count repackaging as producing. MoCRA looks at the name on the label. Each needs a name in writing before your build.
So reverse the usual order: build your file, name your certifier, clear your listing copy, then send your prep center a file it can build against.
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