So far I've only used one file out of the box and it performed AMAZINGLY. It opened right up you might even say it unfolded and I could slip my documents between the sleeves. It had a tab to which I could affix a label. However having used only one folder out of 100 I feel it is too small of a sample size to come to an informed conclusion. Please follow up with me in three months or so and I will try to provide a more informed analysis.