Use the transparent diagonal pocket to hold to-do lists, routing lists and small items that correspond to the documents inside the folder. Color code your files with these heavy-duty folders that resist tears, repel moisture and are easy to clean. Acid free, PVC free. File Folder Size Type: Letter; File Folder Color: Assorted; Color Family: Multicolor; File Folder Color Assortment: Blue; Green; Purple; Red; Yellow.