Heavy-duty, expanding file with 21 pockets is made to resist everyday abuse and transport letter-size documents safely. Index dividers to organize files into sub-categories. File also includes an open top, extra-thick covers and rip-proof Tyvek reinforcement at gusset top and corners. Preprinted, double top-tabs are aligned in a straight line for easy viewing. 1/3-cut tabs are preprinted A to Z for easy indexing.