The OEM Smead TUFF Pocket Poly Expanding File Pocket comes in a box of four and features strong, heavyweight polypropylene construction with a 3-1/2 inch expansion to hold a substantial amount of paperwork. These pockets are designed with bright hues for effective color-coding and include drop front panels for easy access to contents. Additional features include 6 inch high, matching color gussets and rounded top corners for both front and back. The acid-free, archival-quality poly material is waterproof and tear-resistant, ensuring protection for your documents.