How to create unique product tabs/size charts
Shopify's Metafields let you display additional pieces of information to specific products, collections, customers, orders, blogs, and much more.
For example, metafields could be used to display a unique size chart or care instructions for different clothing items.
With Online Store 2.0, metafields and attributes can be added using the new theme editor without needing APIs or custom code.
For a extensive guide, view Shopify's article on how to displaying metafields on your online store.