How to Ship Multiple Products?
Many brands sell bundled products to increase average order value, create seasonal promotions, or offer curated shopping experiences. But once a bundle goes live, the real challenge begins:
How do you ship a bundle SKU accurately and efficiently across multiple platforms and warehouses?
This is how brands can handle bundle SKUs from inventory to fulfillment, with Windingflow automating the whole procedure.
Today, our focus is on Bundle SKUs, an effective strategy that merges separate products into a single distinct SKU to streamline sales and increase profits. For numerous brands, product bundling is a successful approach to motivate customers to purchase more while enhancing their experience.
Whether your goal is to assemble curated gift packages, boost the average order value, or clear out a slow-moving item with a discounted price, bundling can be transformative when handled effectively.
What Is a Bundle SKU?
A bundle SKU, also known as a composite SKU or kit, is a selling unit. It combines two or more individual items into one package. This package is listed and fulfilled as a single SKU. Popular types of bundles include:
- Promotional sets that add items for free or at a discounted price
- Complementary product combos that are frequently bought together
- Pre-packaged offers designed to drive conversion on platforms like Amazon or Shopify
- Subscription bundles with rotating single item variations
These strategies help reduce shipping costs, move stagnant stock, and make bundle pricing more attractive to new and returning customers.
The Challenges of Bundling Items
Bundling products can boost profits. However, it also makes things more complex for systems. This is especially true for brands that use third-party fulfillment services or work with a fulfillment center. Common challenges include:
- Tracking inventory for both the bundle SKU and each individual item
- Managing bundle type variations across marketplaces with different listing requirements
- Coordinating warehouse picking and packing based on whether bundles are pre-assembled or built on demand
- Preventing overselling when a single item is used in multiple bundles simultaneously
If your systems do not bundle items correctly, it can cause delays and stockouts. This can hurt customer satisfaction and increase fulfillment costs.
How Windingflow Solves Bundle Fulfillment
1. Bundle SKU Structure and Mapping
Windingflow lets you easily create a bundle by defining a parent SKU that includes all individual items underneath. Each bundle is split automatically during order processing. This helps warehouse staff get clear picking instructions, even if bundles differ by channel.
You can give a unique SKU to every bundle type, no matter how it is listed on Amazon or your Shopify store.
2. Real-Time Inventory and Bundle Syncing
The platform calculates available bundle inventory based on the underlying single item stock. If one complementary product goes out of stock, Windingflow will update availability across platforms to prevent overselling. It supports both pre-packed and on-demand assembly workflows.
3. Fulfillment Center Coordination
For businesses using a fulfillment center or 3PL, Windingflow automates picking and packing based on bundle logic. It also supports cross-border shipping and custom labeling based on customer geography or platform.
All fulfillment services integrate with real-time reporting, helping you control margin while scaling operations.
Real-World Example
A lifestyle brand launched a Self-Care Night Kit combining skincare, candles, and tea. The team wanted to:
- Offer a discounted price when products were bundled
- Promote a slow moving item by pairing it with bestsellers
- Increase average order value through bundle pricing
With Windingflow, they made a special SKU for the kit. They defined each item in it and set up rules for routing, packing, and labeling per channel. Inventory synced across all platforms and fulfillment was 100 percent accurate.
Make Bundling Work for You
Whether you are bundling items for a seasonal sale, upsell campaign, or everyday value pack, the key is execution. Windingflow helps brands grow by managing SKU mapping, real-time inventory, and smart fulfillment across every type of bundle.
Looking to simplify how you sell and ship bundles?
Let’s talk and make bundling a growth driver, not a headache.
