This just arrived last week and I have worn it every other day. The support is great and the fit is excellent. I wear it to the Club House for both the treadmill and the rowing machine. For me I feel far more relaxed by the end of my workouts simply because of the help I get from the shirt. I plan on buying more.
I've been surprisingly happy that the shoulder support shirt actually exerts a pull in the right direction and reminds me to have a better posture. And it's easy to wear under clothing. I'm very satisfied.