Automatically assign size charts to products using Shopify metafields - perfect for organizing by custom attributes like material, age group, fit type, or region.
This feature is only available on our paid plans.
What are metafields?
Metafields let you store custom data against your products in Shopify. If you're already using metafields to tag products with attributes like fit type, material, or target age group, you can now use those same values to control which size chart appears - no manual product selection needed.
📖 New to metafields? Shopify's guide is a great place to start.
Setting it up
Open the Kiwi Sizing editor and go to Product Matching
Add a new condition and select Metafield as the condition type
In the Select a product metafield field, enter your metafield in
namespace.keyformat
Set the value you want to match against
Save your changes
The size chart will automatically display on any product where that metafield matches the value you defined.
Finding your namespace and key
Your metafield identifier follows the format namespace.key — for example custom.fit_type or custom.age_group.
You can find this in:
Shopify Admin → Products → select any product → scroll to Metafields
Shopify Admin → Settings → Custom data → Products
Tips
Metafield conditions are ideal for large catalogs where manually assigning products is time-consuming
You can combine a metafield condition with other conditions like product type or tag for more precise matching
If a product doesn't have the metafield set, or the value doesn't match, the size chart won't be assigned to it
🔒 Metafield conditions are available on paid plans only. Upgrade your plan to access this feature.
Need help? Reach out to our support team via the chat icon in the app.