Unique file pocket design has a raised gusset height so that the gussets ride along the file cabinet rails. This eliminates tearing and damage caused by removing file pockets with low gussets. 9 1/2in high gussets are reinforced with rip-proof strips with Dupont Tyvek material along the top and bottom corners. Extra-thick, 22 pt. outer panels for added durability. Pocket/Wallet Type: Files/Papers; Size: Letter; Overall Expansion: 3.5in; Colors: Blue.