I liked this shirt so much that I came back to the site to buy the same shirt in Red and Orange, and thought I should write a review.
It's tougher than a regular T-Shirt, but just as comfortable. It's not hot - very comfortable in the recent heatwave (28 degrees and up). Survived baby sick, frequent washes and my insane sweatiness.
OK, I think I should stop there - it's a good shirt.