How Default Values Work
When you set a default value for an option:
The option appears pre-selected when customers view the product
Customers can change the selection if they want a different value
If the customer doesn't make a change, the default value is automatically added to their cart
Setting a Default Value
To set a default value:
Go to your option group
Click on the option you want to configure
In the Form Attributes section, find the Default Value field
Select which option value should be pre-selected
Save your changes
Important Notes
Default values work with all option types (Dropdown, Swatch, Button, Text Input).
Only one value can be set as default per option.
Default values don't restrict customer choice - they can always select a different value.
If an option is marked as required and has a default value, customers can proceed without making a selection.