Product FLEX files allow you to specify specific product page layouts for your Product Page Templates. This is a powerful feature if you have different products that require special or unique attributes that do not follow normal convention.
Example: Lets say that we sell two different types of products; Home Improvement Products and Delivery Services. In this example, we want people to purchase the products we sell through the normal checkout process, however, for the Delivery Services we want them to request a quote. Using different FLEX Product files and Product Page Templates we can have the normal Add to Cart button show up on one Product Page Template and a Request a Quote form on the other.