Products tags are used to display what products are in each post. When a post has product tags, the products will be displayed in the galleries which makes your galleries shoppable. This is a great way to increase your conversion.
Add a product tag
Navigate to Posts
Click the post you want to add a Product tag to
Under Product tags, click Edit
Click where you want to add your Product tag
Choose the product you want to add
Click Save & Exit
Add products tags to multiple posts at once
Navigate to Posts
Choose the posts you want to add Product tags to
In the Bulk action menu, choose Tag products
Click where you want to add your Product tag
Choose the product you want to add
Navigate to the next post with the arrows
Click Save & Exit when you have tagged all posts
More on Product tags
Product tags can be used as sources in galleries do display all posts of specific products.
A post can have several product tags
Galleries can use product tags as sources
Labels are visual in the galleries
A product tag can be removed from a post without affecting the post in any other way