Lulu keeps all of the files that you use for projects in "My Files". "My Files" also has 5GB of space for files that haven’t been used in a project yet. Once a file is added to a project (even if the project is still in Draft status), it no longer counts towards the 5GB limit. Files not linked to a project are automatically removed after 21 days.
In My Files you can:
Upload files from your computer to your Lulu account.