I was so skeptical when I bought this, but I needed something to carry water and nutrition on my longer runs. After my first time using it I knew I had made the right choice and absolutely LOVE this thing.
I shouldn't even call it a fanny pack, but that's the first thing that comes to mind when you see it, but it really is a running belt. It fits so nicely, with great adjustability, is really comfortable and does not bounce around AT ALL. I was shocked about the lack of bounce even when fully loaded with water, phone, gels/chews, etc.
In the front you have 3 pockets. The zippered pocket runs the length of the front pocket section, this is where I usually put my phone (galaxy s7) and my keys since it has a hook to keep them in there. In front of that zippered pocket there are the 2 stretch pockets (one larger and one smaller) that I put chews/gels in and are handy for trash once you have consumed those as well.
In the back you have 2 water bottle holders, one on each side, and then a zippered pocket with a bungee cord in the center. I use the Ultimate Direction body bottle plus bottles (item # ULD000V) in the holders, the soft bottle conforms to your body and collapses as you drink to help eliminate bounce. With both bottles full that gives you just over a liter of water.
Really can't say enough good things about this item. If you are looking for something for longer runs but dont want to go the vest route this is a great alternative and it will be with me on all my long runs from now on.
Some size info:
Size (XS/S): 22-33 in. / 56-84 cm
Size (M/L): 31-40 in. / 80-104 cm
Im a 32/33 waist and the M/L fits perfectly. Keep in mind that it will fit a bit smaller when its fully loaded.