How can I link a fitting guide to each product detail page?

[Wilson24]

I'm looking to create a clothing store, each product comes with a fitting guide. Is there a way for me to create a list of fitting guides (200+ guides) and then link one of these to each product detail page?

Ideally, each fitting guide would have a WYSIWYGs editor so I can add body content with subheadings and a table of content. I will be using the Expanse theme.