Delivery windows can be named so you can easily reference them. For example, you could name a delivery window, "July" or "Spring 2" and you will assign a date range to that delivery.
To set this up, head to admin > settings > delivery windows.
Once you're in Delivery Windows, in the display name field, enter the name you'd like this window to be displayed ask. You can also edit the dates for the delivery windows.
After you've entered the names, You'll see the names reflected in the product details tab in the product gallery, instead of the dates for the delivery window.