The fabric is superb. The thinness of the fabric helps you stay cool. VERY comfortable. I got the "Heather Forest" color, which has a bit of polyester in it, to give it some 'pull.' GREAT quality. Please note, it does say ONLY the HEATHER colored t-shirts have the polyester and are thin and stretch. The heather green color is unique, and the white printing of the words really stands out. Buy one!