1) The plastic folder is very thin and doesn't feel like it will hold up over time. 2) Also the hanging file tabs at the ends slide in and out and don't stay put. If you don't go in and out of your files much it may be okay - mostly for long term storage. 3) The sides are actually enclosed with an accordion tab forming a pocket. If your papers to be filed are not perfectly aligned to fit into the folder the edges will not fit in without alot of adjustments.