I wanted a bag to carry several items of photo gear, already in padded cases, that would keep them together while travelling and be easy to pickup & carry when at site. I wanted something smaller than the usual backpack to stop them rolling about so this just the right size and ideal for my application. It is very basic and doesn't have lots of straps & pockets, just a front zipped flap, but I didn't want any. The padding & carry straps are very basic but just long enough for the average male to fit in.
Disappointing that there are no sizes on MW's website. So, the internal dimensions in cm are: 33 high (maximum, 30 usable), 23 wide (its straight sided) and 7 deep at the sides up to 13 deep in the middle.