Pendaflex Standard Red Fiber Recycled File Pockets 10 Pack (1536G-OX) Standard expanding file pockets with double-thick fold-down front, Tyvek reinforced gusset top and Manila lined back. Double-thick front folds down for easy access to documents. Single pocket expands up to 1 3/4 Inches. Tyvek reinforced gusset tops resists tearing. Red fiber with Manila lined back.