Heavyduty, expanding file with 12 pockets is made to resist everyday abuse and transport lettersize documents safely Index dividers organize files into subcategories File also includes an open top, extrathick covers and ripproof Tyvek reinforcement at gusset top and corners Preprinted, double top tabs are aligned in a straight line for easy viewing 13cut tabs are preprinted with the names of the months from January to December for monthly indexing