I bought this to wear for exercise as well for under my white shirts. I don't like the way that way white t-shirts look so obvious under white broadcloth so I wanted a color closer to my skin tone. I also run a little warm, so I thought that, "Heat Gear" high-tech fabric would be a great idea. It does dry fast, but it itches like crazy, and that's from somebody that wears wool suits to work every day. I now notice that my back is breaking out after wearing it. I can't say that this a "causal", but it's very, very coincidental. The fit is also so loose that I double checked the size, I thought they'd sent a XXL instead of L. They hadn't.