> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.peak-pim.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# 🏷️ Adding variant metafields

Like products, variants can hold custom details through metafields, such as a specific measurement for that size.

# Before you start

A variant-level metafield definition must already exist in `Settings > Metafields`.

👉 [Creating a metafield definition](https://help.peak-pim.com/en/article/creating-a-metafield-definition-4h0n6u/)

# How to fill in values

Open the variant in Peak PIM, enter the metafield values, then publish to send them to Shopify.