I bought this for my trip to Disney. I was trying to pack lightly, and was going to be there for 10 days, including running the Goofy challenge in the process. I didn't want to bring too many jackets, so this served as my light jacket (thanks to laundry on-site!) as well as my running gear.
It has a definite athletic look to it...the reflective strips and the material. However, because it's black, I noticed that in photos it wasn't obviously a running jacket. It just looked like a regular jacket. The ventilator panel keeps things cool, which I needed, and the material cannot be beat. It's a soft, almost silky, material that flows nicely when running, doesn't hold sweat, or any other moisture for that matter, and was easily packed...no wrinkles!
For me, the best thing about this jacket was the fit. It lies flat across my hips and my bust. I never had to adjust, it never felt tight in the bust or rode up over my hips, which is a common problem for me. I noticed this in the running photos afterward...the jacket is in the right place the whole time!
Also, if you're considering this for running; I chose to wear a camel bak for the marathon (I have enough of a belly that I am uncomfortable with the fuel belt and I'm constantly adjusting it) and it did not bunch up at all. The fit was such that the camel bak went over it easily and it didn't look odd. I've got other jackets that are looser and it looks like there is fabric coming out everywhere with the camel bak on. This was not the case.
Definitely recommend!