# Upsell

Upsell a product in the cart drawer (and the cart page) using a custom metafield definition. You can set different combinations for different products.

![](/files/J5WAnmVaXSRpmWn8q49D)

### Setting up the new metafield definition

This feature uses metafields so our first step is to create a new metafield definiton. The most important part is to use this namespace and key: `theme.upsell` 

![](/files/aONTJtAo7iDOhxuYtAOS)

To start, navigate to your Shopify Admin -> Settings and choose Metafields from the left panel. Next, click on **Products** *(click images to zoom)*:

![Under 'Metafields', click on 'Products'](/files/QQ7594gmDNvDrqUzgiGV) ![Click on the 'Add definition' button](/files/g94YeW8MVwikt9CuUx5O)

Click the **Add definition** button to begin. Choose a name, we'll use '`upsell`'. Next, we will use a custom namespace. This is **required**.

A crucial step here is to change the **default namespace** (usually called '*my\_fields*') to **`theme`**

![](/files/R5wUiFYKKVyd92ZHKSUC)

Add a description *(this is optional)* then choose **Select content type**. Here, choose the **Product** type and **Save** your new definitions.

![](/files/dbkyiG87QnR3mBtRZkty)

### Product setup

Now that our custom metafield has been defined, 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:

![](/files/pc5nWo8H4HnLaJVOtcJd)

Don't forget to **Save** your product and preview it on the cart drawer (or cart page).

![](/files/3Lk5DxX4yOU8pOgYEP8o)


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