How to Prep Bundles & Multipacks for FBA (2025 Guide)

Why Bundles and Multipacks Can Be Tricky

Bundles and multipacks can boost your average order value and set your listings apart from competitors — but they’re also one of the most commonly mis-prepped product types in FBA.

Amazon treats bundles and multipacks differently than individual items, and errors in labeling or packaging can lead to inventory being split, delisted, or rejected at the fulfillment center.

This guide walks through how to prep both bundles (different complementary products sold together) and multipacks (multiple identical units sold as one listing) for FBA — step-by-step, with examples, supplies, and a checklist to stay compliant.

👉 This article is part of our Complete FBA Prepping Guide (2025 Edition).

FBA Requirements for Bundles & Multipacks

Amazon’s rules ensure that every product listed as a “set” stays together and ships to the customer exactly as advertised.

Key FBA requirements:

• Each bundle or multipack must have one unique FNSKU representing the entire set.
• All items in the set must be securely packaged together — no loose components.
• Packaging must clearly display: “Sold as Set – Do Not Separate.”
• For multipacks, all units must be identical (same ASIN, size, color, and condition).
• Bundles combining different ASINs must be listed under a new, unique bundle ASIN.
• Fragile or liquid items inside bundles must still meet individual packaging standards.
• Total weight per carton must remain under 50 lbs.

⚠️ Failure to label a set properly can result in Amazon separating items, causing stranded inventory and inaccurate orders.

Required Supplies

Purpose

Recommended Supplies

Bundling

Shrink wrap, poly bags (clear 1.5 mil+), or boxes

Labeling

FNSKU labels, “Sold as Set – Do Not Separate” stickers

Protection

Bubble wrap, foam inserts, kraft paper

Organization

SKU labels, bag sealers, tape gun

Inspection

Scale, measuring tape, barcode scanner

Step-by-Step Prep Workflow

1. Receiving

• Verify that all components for each bundle or multipack are present.
• Check product conditions — no leaks, tears, or missing accessories.
• Match SKUs to your master list before packaging.

2. Inspection

For bundles (mixed items):

• Ensure every product is new and matches listing details.
• Confirm that branded components (e.g., shampoo + conditioner) are authentic.
• Check expiration dates for consumables — they must align.

For multipacks (same item):

• Confirm all units are identical — no packaging variation or barcode mismatch.

3. Cleaning / Preparation

• Remove price stickers and residue from individual units.
• Straighten boxes and wipe surfaces if dusty.
• Organize by bundle or set type for efficient labeling.

4. Labeling

For Multipacks

• Print one FNSKU label for the entire set.
• Apply the FNSKU to the outermost packaging (poly bag, shrink wrap, or box).
• Cover all individual UPC or manufacturer barcodes inside the package.

For Bundles

• Create a new listing (ASIN) for the combined product.
• Assign a unique FNSKU to that listing.
• Apply that FNSKU label to the outer packaging only.
• Include a large, visible “Sold as Set – Do Not Separate” label.

Pro Tip: Amazon recommends using black text on a bright yellow sticker for maximum visibility.

👉 For printing and tracking automation, see The Essential Software Stack for Running a Prep Center.

5. Bagging / Wrapping

Poly Bag Method

• Ideal for lightweight or soft goods (cosmetics, small tools, accessories).
• Place all items inside one clear poly bag.
• Seal completely — no open edges.
• Add the “Sold as Set” label outside the bag.

Shrink Wrap Method

• Best for retail-ready items or boxed products.
• Arrange neatly, ensuring barcodes face inward.
• Use a heat sealer for tight shrink-wrap coverage.
• Add FNSKU and “Do Not Separate” stickers outside.

Box Method

• Required for heavy or fragile bundles.
• Use corrugated boxes; fill empty space with packing paper.
• Tape securely but do not overpack.
• Label outside as “Set – Do Not Separate.”

6. Final Packaging

• Sort bundles by ASIN and destination per your FBA shipment plan.
• Keep weight balanced and boxes sealed.
• Affix FBA box content labels.
• If shipping multiple bundle types together, clearly separate them within cartons.

Common Mistakes to Avoid

1. Labeling each item individually instead of the entire set.
2. Forgetting “Sold as Set” labels. Amazon might separate your items.
3. Mixing different ASINs or variants in a multipack.
4. Not covering barcodes on internal products.
5. Overstuffing bags or under-sealing shrink wrap.

Pro Tip: Test your packaging — drop it from waist height. If the bundle shifts or splits, reinforce it before shipping.

Recommended Tools & Materials

• Label Printer: DYMO 550 Turbo or Zebra ZD421.
• Shrink Wrap System: Impulse heat sealer + 75-gauge film.
• Poly Bags: Clear, suffocation-warning bags (9x12, 11x14).
• Set Labels: Pre-printed “Sold as Set – Do Not Separate.”
• Software: InventoryLab, SoStocked, or ScanLister for tracking bundles.

Shipping & Storage Tips

• Store prepped bundles upright to prevent crushing.
• Keep SKUs and components organized — color-code shelving if possible.
• Avoid stacking heavy bundles over light or fragile ones.
• Double-check all box weights before generating shipping labels.
• Maintain a running count of how many bundle units exist per ASIN to prevent overselling.

When to Outsource

If you’re building custom bundles at scale or managing hundreds of small components, outsourcing bundle prep can save hours and reduce packaging waste.

Professional prep centers can handle:

• Bulk shrink-wrapping and labeling.
• Barcode masking and quality control.
• Replenishment planning for multi-component bundles.

This ensures consistency across all shipments and compliance with FBA’s strict standards.

Quick Reference Checklist

Task

Done

Verify all bundle components

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Inspect for damage or expiration

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Remove all retail barcodes

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Apply one FNSKU for the entire set

☐

Add “Sold as Set – Do Not Separate” label

☐

Seal in bag, shrink wrap, or box

☐

Keep total box weight under 50 lbs

☐

Print and attach shipment labels

☐

Keep It Together, Keep It Compliant

Bundles and multipacks add serious value — but only if your packaging keeps them intact. A cleanly wrapped, clearly labeled set prevents confusion for both Amazon and your buyers.

Invest time in mastering the art of bundling: precise labeling, smart wrapping, and attention to detail. It’s how top sellers maintain high margins — and avoid messy stranded inventory.

👉 Continue reading our Prepping Guides:

• How to Prep Used Books for FBA
• How to Prep Shoes for FBA
• How to Prep Fragile Items for FBA
• How to Prep Bundles & Multipacks

References

• Amazon Seller Central – FBA Product Preparation Requirements (Multipacks & Bundles)
• Amazon Seller Central – Packaging and Shipment Guidelines
• Amazon Seller University – Listing and Packing Product Bundles