Add a product subtitle to any product.
First, make sure “Product Subtitle” module is enabled in Modules Manager.
In any product’s backend you will find the text-box where to add the subtitle:

To enable the subtitle for the product in Catalog grid, please access Settings › WooCommerce › Catalog › Product Card › Product Subtitle and enable it there, then modify its tag or color eg: screenshot .
For the product page, please access Settings › WooCommerce › Product Page › Summary Components › Product Subtitle and enable it there eg: screenshot .
Adding shortcodes:
You can add shortcodes if you want to describe a product easier, for example:
Showing Attribute(s)
[rey_attributes id="pa_size" product_id="" limit="3" separator="," link="false"]
This outputs the first 3 size attributes, separated by a comma.
Enable display in Cart & Checkout
You may choose to display the product subtitle in the Cart and Checkout pages by adding the code snippet below into the child theme’s functions.php :
add_filter('reycore/woocommerce/module/product-subtitle/cart_display', '__return_true');What’s the ACF field key of the subtitle option?
The key name is product_subtitle_text . To find a field key, simply right click > Inspect element and look into the data-name attribute ex: screenshot .