This map pouch, from Condor, serves a dual purpose. I can throw it into a medium-sized messenger bag along with a small sketchbook for urban sketching. For more sustained Plein Air painting, it gets added to a larger backpack that includes a tripod and additional supplies. The pouch's dimensions are 6.5" in height, 5.5" in width and 3.5" in depth. Originally, there was a velcro panel on the front flap, but I removed it as it gave added bulk and wasn't required.
This pouch holds any of the tools I may require in a sitting. All of them are not used during every session, as I don't always know beforehand what I will need. However, I can move between straight watercolour or ink with watercolour as the situation or time restrictions guide me. It took some time to narrow the selection down to the relevant pieces. Now it serves me well: I just grab it and go. A smaller more contained pouch, employed for very light carry, can be read about here.
What is in the Pouch
In terms of content, the map pouch holds a total of 33 items, if you include the lead pointer on the zipper pull.