# Upsell products ## Add Upsell tags to certain products Our themes use product tags as "upsell tags" to set up upsell. An upsell tag must be a handle string(only allow letters, "**-", "\_"**, no space, no special characters) and have the syntax: **"upsell\_"**. Refer to [**here**](https://shopify.dev/docs/themes/liquid/reference/filters/string-filters#handle-handleize) for more details about the handle string. When users view a product page, products have **at least one upsell tag that is identical to the current viewing product's upsell tags** will be displayed as upsell products. A product is able to have many upsell tags. Example: product A has the upsell tags are **upsell\_fashion, upsell\_clothing**. When users view this product on the product page. Products have tags **upsell\_fashion** or **upsell\_clothing** will be shown as upsell products. Upsell products are also shown in the popup cart after a product has been added to the cart. ## Open Upsell products settings. 1. From your Shopify admin, go to **Online Store** > **Themes**. 2. Find the theme that you want to edit and click **Customize**. 3. In the left-hand toolbar, click **Theme settings.** 4. Click **Upsell products.** ## GENERAL SETTINGS * **Sort random the product list:** check or uncheck to show product list sort random. * **Enable:** check or uncheck to enable upsell in cart popup * **Limit:** drag and drop to choose product quantity that displayed in cart popup ## VISIBLE ON PRODUCT PAGE * **Enable:** check or uncheck to enable upsell in the product page * **Limit:** drag and drop to choose product quantity that displayed ## VISIBLE ON CART PAGE * **Enable:** check or uncheck to enable upsell in the cart page * **Limit:** drag and drop to choose product quantity that displayed ## PRODUCT ITEM SETTINGS * Please refer to [this guide](https://beloria-docs.boostheme.com/tips#product-item-settings) for more details.