Spacious pouch that somehow fits perfectly into most every bag I've used it with. Its vertical orientation allows for easy retrieval of the contents without removing it from the larger bag. It slips neatly into the interior pockets of the Shop Bags, the front pockets of the Pilot and the Co-Pilot, the front pockets of the Synapse/Synik line of backpacks, the end pockets of the Pickup Truck (and the entire Truck line), and the main space of the Nomad - just to name a few. It holds much more than expected yet slips easily and intuitively into small spaces. Additionally, it will stand alone when full and is handy as a pen holder or other desktop uses. It's one of my favorite small organizer bags and I have many colors so I can mix and match with larger bags' colorways. It can also be carried crossbody, with room for a standard 16oz plastic bottled water to stand upright. Really a handy little bag with endless uses (I've even used it as a gift bag to hold small travel or art themed gifts). Shown below with a few other Tom Bihn bags.