Do you regularly look in your files to find old documents or file new ones? Perhaps others in the office need to access the same files. If that's the case you will want to make sure that you use dividers that are strong and designed to last. Mylar reinforced dividers have reinforced lettered tabs for extra strength so you can use them time and time again. These bright, white dividers are lettered A to Z so they can be used for a range of filing needs.