Pendaflex Premium Reinforced File Pockets, Letter Size, Brown, 5.25 inch Expansion, 5 per box (85545) Premium expanding pockets are built to outlast standard file pockets 5 Points of Tyvek reinforcements prevent tearing, fraying, and bursting, even when overstuffed 5.25" Expansion holds up to 1,050 sheets Moisture-resistant Redrope body Box of 5 letter-sized reinforced file pockets