I recently bought a tank bag from AirTankPlus (Bagman brand) to replace my modified golf cart setup I cobbled together. The intent was to take up less room in a vehicle when I travel. It came with a padded board covered in the same material as the bag which fits the bottom of the case nicely to stop rolling. The dimensions were incorrect on the website but a phone call clarified the dimensions (24x8x8). There are no internal or exterior pockets but has enough space inside to include accessories. I did suggest that they consider such additions in the future but the bag meets my needs as is.
I clicked on the link Stoti provided and saw it had bunches of pockets that appealed to me but I didn't see any dimensions of the bag other that it fit a "D size oxygen tank". I had no clue what dimensions of a "D size" tank are so did a quick search and found the tank is 4.4"x16.7" --- too small for my 74 tank from Joe Brancato.
The link Mike_Lenadrdon provided is appealing.
