Here’s a clear, practical guide to creating product bundles on Shopify — with the simplest (first‑party) method first, then alternatives and important considerations.

Quick summary (if you just want the shortest path)

• Install Shopify’s free first‑party app “Shopify Bundles.”
• In Shopify admin go to Apps → Bundles → Create bundle → add products, set quantities/variants and bundle price → save and publish the bundle product. (help.shopify.com)

1. Create bundles using Shopify Bundles (recommended for Fixed bundles & Multipacks)

• Install the Shopify Bundles app from the Shopify App Store (it’s free and available to all plans). (help.shopify.com)
• From Shopify admin → Bundles → Create bundle.
• Enter bundle title, description and image.
• Click “Select products” and pick the component products; set quantities (e.g., 1 shampoo + 1 conditioner) and choose which variants customers can pick. You can duplicate a product inside the bundle to make a multipack (e.g., 3× same shirt). (help.shopify.com)
• Set the bundle price (you can set a discounted price or adjust manually). Bundles support discounts and discount codes — but discount allocation is calculated on the bundle then distributed to components by weighted price. (help.shopify.com)
• Save the bundle (initial status = Draft). Publish it (set to Active) to make it visible on Online Store, Shop and POS. (help.shopify.com)

2. Important inventory, checkout and compatibility notes

• Bundle inventory is driven by the inventory levels of the component products. Shopify calculates how many bundles you can sell by dividing each component’s available inventory by the qty required and using the smallest result. (E.g., if bundle needs 2 chairs and you have 15 chairs and 8 desks, available bundles = floor(min(15/2, 8/1)) = 7). (help.shopify.com)
• Eligibility/constraints: your store must use the Online Store sales channel or a Custom Storefront, have a bundles app installed, and use an upgraded checkout (stores with checkout.liquid customizations are incompatible). Bundles aren’t compatible with subscriptions, pre‑orders and some purchase options. If ineligible, bundles may be set to draft or components added as separate items at checkout. (help.shopify.com)

3. If you need mix‑and‑match bundles or more advanced behavior

• Shopify Bundles supports Fixed bundles and Multipacks. For mix‑and‑match (letting customers pick interchangeable items into a single bundle) you’ll need a third‑party app or a custom solution (Shopify Plus merchants can use the Bundles APIs). (help.shopify.com)

4. Alternatives (when Shopify Bundles doesn’t fit)

• Third‑party bundle apps (often give more features: bundle builders, BOGO, mix‑and‑match, upsells, analytics). Examples: Bundable (Sovi Apps), BOGOS and many others on the Shopify App Store — pricing and features vary, many offer free trials. (apps.shopify.com, bogos.io)
• DIY workarounds (no app): create a bundle as a separate product (single SKU) that you manually manage inventory for, or use a collection + automatic discount so customers can pick items from a collection and receive a bundle discount. These workarounds can be cheaper but are less elegant and require manual setup/fulfillment. (bogos.io)

5. Practical tips and checklist before you publish

• Test the full customer flow (product page, add to cart, discount application, checkout) on desktop and mobile.
• Verify shipping, tax settings, and whether discounts apply as you expect (Shopify allocates discounts across component products for taxes). (help.shopify.com)
• Confirm inventory tracking for all components so the bundle availability is accurate. (help.shopify.com)
• Consider fulfillment: will you pick items separately or create a prepacked bundle SKU? Prepacked SKUs can simplify fulfillment but require manual inventory adjustments.
• Monitor bundle performance (Shopify Bundles can show bundle metrics) and adjust pricing/promotions as needed. (help.shopify.com)

If you tell me which type of bundle you want (fixed, multipack, or mix‑and‑match), whether you prefer a built‑in vs. third‑party app, and whether you sell via Shopify POS or Subscription services, I can give step‑by‑step instructions tailored to your exact case (including recommended apps and sample settings).