A folder set of bookmarks will contain multiple folders of bookmarks. If you want to share a large number of bookmarks at once, using the folder set link is the fasted and easiest way to do this.
To access the link for your folder, you will need to access the “Customize & Share” screen for the folder that you want to copy the link to. Follow the steps in the image below:
When you have copied the link to your bookmark folder set, it will look similar to the link below: