The C-Line 13-Pocket Specialty Expanding File CLI48311 is designed for efficient document storage. It features 13 pockets and 12 tabs, accommodating 8-1/2" x 11" documents. Made from acid-free, archival-quality polypropylene with an additional additive, this expanding file ensures durability. It includes a button and elastic closure for secure storage and comes with tab labels for easy organization.