In TitleLeaf, a "Product" can have one or more "Product Formats". The Product attributes can be found on the "Edit Product" form of the Admin UI or the "products-only" ingestion template. The Product Format attributes can be found on the "Edit Product Format" form of the Admin UI or the "product_formats" ingestion template.
The "products-default" template and the "products-default-with-multiple-formats" template contain attributes for both Product and Product Format records. These templates are offered as convenience methods to create/update Product and Product Format attributes simultaneously.
If, as a publisher, you release your product in multiple formats simultaneously, it is recommended that you use the "products-default-with-multiple-formats" template to create a Product and all its associated Product Formats at once. After such an ingestion, each Product Format for a given Product will be assigned the same attributes. For this reason, you will normally need to ingest the "product_formats" template afterwards. You are essentially overriding some attributes (eg, prices and dimensions) if they differ across the different formats of a given product.
Products List (Admin > Catalog > Products):
Edit Product Form (Admin > Catalog > Products):
Product Formats List (Admin > Catalog > Products > Edit Product):
Edit Product Format Form (Admin > Catalog > Products > Edit Product > Product Formats):