Kuhl pretty much nailed it with these -- I don't sit still well, and need a short that can be flexible to most any need -- from work to play -- and these certainly are. Flexible fabric through the inside of the legs and crotch ensure things never get bunched up, and help to maintain some airflow when I'm really putting them to the test. The seven pockets allow me to organize and protect most anything, including my phone on the side of the leg, which is key.
I'm typically between a 30-31 in most shorts/pants, and found the 30 to be perfect, especially as they stretched out a touch.
I'd give them five stars if they were a bit more tailored in the leg, and made a bit less noise when walking. It's not loud by any stretch, but it is noticeable.