Product Catalog
How to Add a New Variation to Existing WooCommerce Products
Add a new size to one WooCommerce product or eighty: the exact steps, the CSV columns, and why Generate variations won't delete what you have.
attributes
More from the journal
Product Catalog
WooCommerce Attributes vs Variations (and Global vs Custom)
Attributes describe, variations sell. One test for which attributes should become variations, and the widely repeated claim that is not true.