You open a compressed folder the same way you open other folders in Windows: Double-click the compressed folder.
You can identify compressed folders by the zipper on the folder icon.
To view percentages of compression and other file information for a compressed folder, on the View menu, click Details.
When you open or view compressed folders, you cannot use the Up or Back buttons on the toolbar, or move up or down levels from the folder.
Extract files from a zipped compressed folder
Add files to a zipped compressed folder
Compressed (zipped) Folders overview