Business Source 2-Ply Vertical Expanding File Pockets, 2" Expansion, Letter Size, 8 1/2" x 11", Manila, Box Of 50 Pockets - Whether you're sending or receiving documents, the Business Source 2-ply vertical expanding file pockets help make your job a little easier. They boast straight-cut tabs to write large, clear labels, as well as a thumb-cuts to quickly open them up.