I have had what I thought was this (extra-small) bag for over 10 years and since the zipper has started to fail I decided to order the exact same bag because my existing bad has been PERFECT for me. Well, much to my dismay, this bag is two inches taller, wider, and deeper than the bag that I currently have. I called AmeriBag and they told me that there used to be a bag smaller than the extra-small and it was called the micro, but they do not make it anymore. I will now have to find another type of bag to replace my old AmeriBag. AmeriBag should bring back the smaller healthy back bag. I am so sad...