# Upsell
Upsell products in the cart and product pages using a custom metafield definition. You can set different combinations for different products.
## Upsell one product
### Setting up the new metafield definition
Create a new metafield definition. Use the namespace and key: `theme.upsell`
From your Shopify Admin -> Settings and choose Metafields. Next, click on **Products** *(click images to zoom)*:
 
Click the **Add definition** button and set a name, we'll use '`Upsell`'. Next, we will use a custom namespace.
This step is **required**. Change the **default namespace** (usually called '*my\_fields*') to **`theme`**
Add a description *(this is optional)* then click on **Select content type**. Here, choose the **Product** type and **Save** your new definitions.
### Product setup
The final step is to edit any of your products in the Shopify Admin -> Products and update the new `upsell` metafield.
All you need to do is scroll to the bottom of the product setup page and fill them in:
Don't forget to **Save** your product and preview it on the cart drawer (or cart page).
## Upsell a list of products
### Setting up the new metafield definition
Create a new metafield definition. This time, use the namespace and key: `theme.upsell_list`
Choose the Product type then set it to a 'List of products'.
### Product setup
The final step is to edit any of your products in the Shopify Admin -> Products and update the `upsell_list` metafield.
All you need to do is scroll to the bottom of the product setup page and fill them in.
Don't forget to **Save** the changes and test it out in the cart:
