# Product Variants You can use product variants to define different variants of a product, such as giving the option to select a colour or size. To create a variant you simply need to allow your Product Document Type to have children, the only required field on the child document type is `umbCheckoutPrice` our demo store shows how you can configure this. Our recommendation is to configure the product variant to have no Template associated with it, however, you can integrate as you see fit or as your project requires. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.umbcheckout.net/configuration/product-variants.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.