I wear this shirt in the morning for a run. When it's warm I don't wear anything over it and the breathable fabric helps me stay cool. When the temp is below 40 or 30 I wear it as a tank top and it does its job well. The fabric is very comfortable, like silk. The tapered design looks good without tightening the skin. I also love the vibrant color of the shirt that has survived multiple washes. The design and cut of the shirt are suitable for both training and everyday use. I like it so much that I bought a second shirt from this manufacturer. Considering the low price and high quality of the shirt, this is a great buy.