Product Dimensions within Dynamics AX are great because they give you four extra elements that you can use to segregate out all of your products, and you can start reducing the number of base product codes that you use. By default the main three dimensions are named Size, Color, and Style, but if you think of your product dimensions in different terms, don’t disregard this feature, because you can rename them to be whatever you like.
Link to article: Rename Product Dimensions To Match Your Business