I'm writing an inventory management application that distinguishes between a product (e.g., Coca Cola) and its different "variants" you can buy (e.g., 330 ml can, 500 ml bottle etc.).
What is the proper word for these "variants"? It needs to be expressive yet general enough to be suitable for all kinds of products.
More examples of what I'm looking for:
- Product: Kingston DataTraveler SE9 USB drive
- Product: Dell E6430 Battery