title: "Facets"
Facets are the primary means to attach structured data to your Products & ProductVariants. Typical uses of Facets include:
{{< figure src="../screen-facet-list.webp" >}}
A Facet has one or more FacetValues, for example:
In the Product detail page, you can assign FacetValues by clicking the ADD FACETS button toward the bottom of the Product or ProductVariant views.
{{< figure src="../screen-facet-add.webp" >}}
The visibility of a Facet can be set to either public or private.
Private facets can be useful for labelling Products for internal use. For example, you could create a "profit margin" Facet with "high" and "low" values. You wouldn't want to display these in the storefront, but you may want to use them e.g. in Promotion logic.