When we use Windows explorer it shows the columns with the name of the folders and files, kind, modification date and the size of the files (not folder size)
Thanks to Folder Size, we'll see how a new column will appear just opposite us in that window and will feature the total size of the files contained in that folder.
It is a very useful patch which can save us some time and which can be useful if we need to erase any folder to have more free space in our HD.
Once we install the patch, we have to activate it. How to activate? View -> Choose details -> Folder Size