This is one BIG bag, actually it’s Two bags. There are only a few manufacturers producing a tank bag like this. The Stack Magnetic Tank Bag consists of One small bag that attaches to the top of the larger bottom bag, and that larger bag mounts to the magnetic base. Bags like this are NOT designed to be ridden with bags mounted to each other at the same time (as seen in the picture). The magnetic base of this bag will allow the smaller (top) bag and the larger (bottom) bag to mount to the magnetic base independently. The idea is that when you need more storage than the top bag allows, you would unzip it from the magnetic base and mount the bottom bag to the magnetic base. There are several storage pockets on this bag, and no shortage of map pockets either. Click on the “View Larger Pictures Link” to see a ton of pictures and features of this bag.
