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Shopify App

Sell size pre packs on Shopify — simply

Turn your product's size variants into sellable pre packs like 1XS-2S-2M-1L. Customers buy one pack at checkout; Shopify expands it into component SKUs and quantities on the order.

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Simple Pre Packs dashboard showing pre pack list with composition, price, and inventory

Features

Everything you need to sell pre packs

Built for apparel and wholesale merchants who sell size ratios as a single unit — from one-off packs to catalog-wide automation.

Bulk create packs

Pick products or a collection, set quantities for each size, and create packs across your catalog in one workflow. Each row is one pack per color group.

Ratio templates

Save reusable size ratios like 1-2-2-1-1 for XS through XL. Apply the same breakdown across products without re-entering quantities every time.

Mass Apply

Apply a ratio template across your whole store. Preview matches and skips, then run a batched job with a detailed report.

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Auto-apply templates

When enabled, new and updated products automatically get pre packs from your default templates — skipping colorways that already have packs.

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Pricing rules

Price packs as the sum of components, or add a fixed or percentage adjust. Round to .99 and optionally set compare-at when discounted.

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Missing & partial packs

A store index flags products missing pre packs and colorways that are only partially packed — so you can fill gaps fast.

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Manage Pre Packs

Browse, edit, and delete packs in a paginated catalog view. Update composition and pricing without digging through Shopify admin.

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Customizable storefront

Theme app embed hides component sizes and can show pack price, units, size breakdown, and per-piece pricing — including on collection cards.

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Smart inventory

Available inventory is the maximum number of packs you can fulfill from component stock — limited by the scarcest size in the ratio.

Create Pre Packs screen for setting size quantities across products Pre packs list with product, composition, price, and available inventory

How it works

From size variants to sellable packs

Simple Pre Packs uses Shopify's variant fixed bundles — one pack variant on the same product, with sibling sizes as components.

1

Pick products & ratios

Select products or a collection and set quantities per size for each pack — for example 1XS-2S-2M-1L.

2

App creates pack variants

The app adds a new variant on the same product and links sibling size variants as components via Shopify fixed bundles.

3

Customers buy one pack

On the storefront and at checkout, customers purchase a single pre pack — not individual sizes.

4

Orders expand automatically

Checkout shows one pack line; the order lists component SKUs and quantities for fulfillment.

Storefront shows packs your way

Component sizes are hidden so customers only see pre pack options. In the theme editor, choose what to display: pack price, units per pack, size breakdown, and price per piece — including pack pricing on collection cards.

  • Open Online Store → Themes → Customize
  • In the left sidebar, open App embeds
  • Turn on Pre pack only picker (Simple Pre Packs)
  • Configure display options, save, and preview a product with packs

Read the storefront guide →

Mobile storefront showing a pre pack size option 1XS-2S-2M-1L instead of individual sizes

Pricing

Simple, predictable pricing

One plan with everything included. Billed through the Shopify App Store.

Monthly subscription

$20 / month USD

7-day free trial

  • Unlimited pre packs
  • Bulk creation from products or collections
  • Ratio templates, Mass Apply & auto-apply
  • Pricing rules with charm pricing & compare-at
  • Missing & partial packs index
  • Customizable storefront theme app embed
  • Online Store checkout & POS support
Start free trial

Bundle expansion is supported on Online Store checkout and POS. Other sales channels may not expand packs into component lines.

Ready to sell pre packs?

Install Simple Pre Packs on your Shopify store and start creating size packs in minutes.

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