Write-On Expanding Poly File Folders, 1"" Exp., Letter, Assorted Colors, 10/BX, Sold as 10 Each V-cut expanding poly file folders with write-on tab. Write-on expanding file folders help you divide, organize and color code projects. Designer V-cut front provides easy access to documents. Full-length tab and lined front panel feature write-on technology. Use write-on feature to identify and organize folder contents.