Expanding file offers a vertical design to make finding papers easier than ever. Tabs on the 31 pockets are preprinted with 1 to 31 for daily filing. Secure your letter-size papers with the full flap with elastic closure. Vertical Reinforced Expanding File expands 3-1/2" to accommodate all your important documents. Durable, acid-free, red fiber material features rip-proof gussets for durability.