This structure is going to ease the way how developers, product managers and designers navigate through the Dropbox. Designers arrange and maintain all folders, while developers mostly work with folders where all the assets and specs are stored, and managers can easily stroll through the folders in order to find the final previews of design.
Copyrights: Please note, that the Dropbox logotype is the part of Dropbox brand and the exclusive property of Dropbox.
Dropbox Archive icon, slide 24: https://dribbble.com/shots/299938-Box-DropBox-icons-PSD?list=searches&offset=6