Size setup

How to Add Size Options on Shopify

Size is the most common Shopify option. Here's how to add it with the right UI, inventory tracking, and sizing chart.

Last updated: July 30, 2026By the Print It My Way team

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Setup

  1. Product → Variants → Add option 'Size'
  2. Enter values (XS, S, M, L, XL, XXL)
  3. Each auto-generates a variant
  4. Set per-size inventory + price

UI: buttons vs dropdown

2-6 sizes: buttons. 10+ sizes (shoe sizes): dropdown. Dawn theme uses buttons by default.

Sizing chart

Store size chart as metafield or dedicated page. Link from product page: 'View sizing chart'. Modal or new page — both work.

Sold-out sizes

Strikethrough shows 'we have XL, just not right now'. Better UX than hiding.

Frequently asked questions

How to add size options on Shopify?

Product → Variants → Add option 'Size' → enter values → save. Each becomes a variant.

Should sizes be buttons or dropdown?

Buttons for 2-6 sizes. Dropdown for 10+ (shoe sizes).

How to add a sizing chart?

Metafield with size table, rendered in product template. Or link to dedicated sizing page from product.

How to handle sold-out sizes?

Show as strikethrough disabled button. 'Notify me when back in stock' button on hover.

Can I have different prices per size?

Yes. Each size variant has its own price. Common for XXL premium (+$2).

How to track per-size inventory?

Each variant has its own inventory count. Set 'Track quantity' on the variant.

How to sort sizes correctly (S before XL)?

Enter values in order in the Variants panel. Shopify preserves order.

How to add half-sizes for shoes?

Enter as decimal values (7.5, 8, 8.5). Or as text (7½, 8, 8½).

Related reading

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