Metafield Structure

All variant data is stored as Shopify metafields on the ProductVariant resource.

Metafield Definitions

Field	Namespace	Key	Type
Description	`custom`	`variant_description`	multi_line_text_field
Meta Title	`custom`	`variant_meta_title`	single_line_text_field
Meta Description	`custom`	`variant_meta_description`	multi_line_text_field
Variant Images	`custom`	`variant_images`	json

In your theme templates:

{{ product.selected_or_first_available_variant.metafields.custom.variant_description }}

Non-primary language translations use Shopify's native Translations API: