To begin, navigate to the Toolbar > Edit with Elementor > Size & Fit Guide popup:
Or go to Templates > Popups > Size & Fit Guide > Edit with Elementor.
You can edit the layout, conditions, rules, and styles of the Size & Fit Guide popup template here.
Please check these guides for further information:
Read more about the Elementor Popups
Guide to Vamtam Elementor Builder
How to trigger the popup from the product description?
You can access the Size & Fit Guide text and icon in the Single Product template:
A single product template lets you create a standardized way to display products on your site. Check here for more details:
https://elementor.com/help/single-product-site-part/
https://elementor.com/help/woocommerce-single-product-builder/
Note:
A single page template is meant to apply a design to the page using dynamic information and not by adding content directly to the template.
To see which products are linked to a Single Product template, review its display conditions:
Tip:
For product categories that need customized Size & Fit Guide popups, you'll need to create distinct Single Product templates and set up their display conditions to match.
Please also check these articles:
https://elementor.com/help/conditions/
Vamtam Elementor Themes: How to set up the WooCommerce Shop & Archive pages?