Custom labels allow you to create specific filters to use in your campaigns.
More about custom labels in the Google Merchant Center Help
Google allows you to add up to 5 custom attributes in your catalogue, using these fields:
- custom_label_0
- custom_label_1
- custom_label_2
- custom_label_3
- custom_label_4
Check out examples of use in our article on "How to optimize Google Shopping".
