How to manage inventory when a product can be bought in different size (batch, or singular item)

Topic summary

Managing inventory for a single product sold in multiple sizes (single unit, 3-pack, 15-box) so stock stays synchronized across options. The goal: when a customer buys a batch size, the other purchase options should automatically reflect reduced availability or become unavailable to prevent overselling.

Request: Whether Shopify supports this natively or requires an app.

Latest update: A reply points to Shopify’s “Product Bundles” documentation as the suggested solution. Product bundles group items for sale together and are intended to coordinate inventory when products are offered in bundled formats.

Key term: Product bundle — a selling method that combines one or more products into a single purchasable bundle.

Outcome/status: No confirmation of implementation or results yet; no alternative apps or methods were discussed. The thread remains open pending feedback on whether Product Bundles meets the inventory sync requirement.

Summarized with AI on January 11. AI used: gpt-5.

Our store is having products which can be bought in different sizes:

  1. Singular Packaging
  2. Pack of three
  3. Box of fifteen

We want to be able to give the customer a choice to buy the product in three packaging but we also want to make sure the inventory is synced. So if a customer buys the product in batch the other options are becoming unavailable.

Is there an application for this or native setup in Shopify?

Hello @Gabriele_HK ,

Please check out Product bundles