The special treatment the inner layer of cotton received is supposed to make the shirt dry faster / retain less water during/post a workout. I wore the shirt on my cardio/abs day and by the time I got home from the gym I was still wet just as if I had worn a regular cotton t-shirt. So 2 stars as for the technology. However, 4 stars for the shirt itself because I did like this shirt. It is soft, comfortable to workout/move around in and fit well according to the sizing chart. However it is not worth the price as the technology did not work. If anything it is a glorified undershirt. Being skin tight and slightly long it's also a bit of a dilemma whether to pull it down over your shorts, tuck it into your shorts or let it bunch up around your waist.