You don't put contracts or important documents in a boring folder. A document folder can leave a good first impression on your customers, like a business card does. These folders are also perfect during a presentation, congress or other occasions. The printing of the folder can be done in your corporate identity, or in another design chosen by you. Are you planning to store a lot of paper in your folder? You better choose a thicker material.
You aren't sure how to properly design your print file? Check out the design guidelines and templates for document folders.