I bought one of these for each of my sons at least 10 years ago.  They were too young to need them at the time (a zip lock was more preferential) and so my wife and I used them - and loved them.  As the kids ages they took them back so to speak and my wife and I made one trip with out them.  I hadnt been home a couple of hours when I ordered the red one for my wife (just to differentiate hers from my sons and mine).  They are still the same - the price has gone up considerably but they are still the best dop kit I have ever seen.
The design is useful and practical.  From the internal hanger to the multiple compartments, even their height and width is well thought out.