This Men's T-shirt has patented Dri-Power, moisture wicking technology that helps keep you dry and cool during the most intense workouts.50% cotton / 50% polyester (Heather Gray is 53% polyester/ 47% cotton) | Fabric weight: 5.6oz (heavyweight)Dri-Power, moisture management propertiesDouble-needle stitched hemmed sleeves ad bottom hemSeamless, 1x1 rib collar and bodyImported; processed and printed in the U.S.A.