Pendaflex Tyvek Premium Reinforced File Pockets, 5 1/4" Expansion, 9 1/2" x 11 3/4", Dark Brown, Box Of 5 File Pockets - Featuring tough material that helps prevent tearing, each Pendaflex Tyvek premium reinforced file pocket helps ensure your documents stay safely filed away. The sides expand to hold all the documents for a specific project in one place.