This tutorials covers how to add custom fields to your product variations in WooCommerce, sanitise the inputs and display the fields in your customers’ orders. We’ll do this with a few snippets of code, without installing another plugin. It’s easy to extend, and you don’t need to be a developer to follow it. I promise.
WordPress Tutorials: WooCommerce
Easy-to-follow tutorials to help you customise and extend WooCommerce.