Show variant data in the product table

Keystone’s Table block on the product template can print up to three extra columns beside each variant row. Those columns read variant metafields (for example a UPC, size chart URL, or compliance note) from Theme settings → Product cards.

The theme editor labels this area Variant metafields, while the inline help text may mention “product metafields.” The Liquid templates resolve values from each variant’s metafields (namespace.key). Create definitions on Variants in Settings → Custom data so every variant can store its own value.

Before you start

Add a Table block to the product template if you have not already. See Product table block.
In Settings → Custom data → Variants in the Shopify admin, create the metafield definitions you need (for example custom.upc as a single line text field).

Map metafields in theme settings

Open Online Store > Themes > Customize.
Click the Theme settings icon (gear) in the left sidebar.
Open Product cards.
Scroll to the Table details group (the same area as SKU and inventory toggles for the table layout).
In Variant metafields, enter up to three handles separated by commas, using the namespace.key pattern Shopify shows in the metafield admin (for example custom.upc, custom.gtin, custom.size_note).
Optionally fill Variant metafields labels with the column headings merchants should see, in the same order (for example UPC, GTIN, Size note). Labels are optional; when omitted, the theme prints the value only.

The setting info text in the theme editor matches the synced theme source: you may list up to three comma-separated metafields and up to three optional labels.

Verify on the storefront

Edit a product and enter metafield values on each variant that should display data.
Preview the product page and confirm the Table block is using the row layout that exposes the extra columns.
If a cell is blank, double-check the namespace/key spelling and that the metafield type supports storefront output (for example rich text may need different handling than plain text).

Related guides

Metafields on product cards — explains how grid cards differ from table rows.
Dynamic variant images — when the gallery should change with the selected variant.

Map metafields in theme settings

Open Online Store > Themes > Customize.

Click the Theme settings icon (gear) in the left sidebar.

Open Product cards.

Scroll to the Table details group (the same area as SKU and inventory toggles for the table layout).

In Variant metafields, enter up to three handles separated by commas, using the namespace.key pattern Shopify shows in the metafield admin (for example custom.upc, custom.gtin, custom.size_note).

Optionally fill Variant metafields labels with the column headings merchants should see, in the same order (for example UPC, GTIN, Size note). Labels are optional; when omitted, the theme prints the value only.

The setting info text in the theme editor matches the synced theme source: you may list up to three comma-separated metafields and up to three optional labels.

Verify on the storefront

Edit a product and enter metafield values on each variant that should display data.

Preview the product page and confirm the Table block is using the row layout that exposes the extra columns.

If a cell is blank, double-check the namespace/key spelling and that the metafield type supports storefront output (for example rich text may need different handling than plain text).