5.4 oz., 100% preshrunk heavyweight cotton; Contrast seamless collarette and 3/4 length raglan sleeves; Double-needle stitching on sleeves and bottom hem and TearAway™ label; Certified under Oeko-Tex® Standard 100; Black/White and Heather Dark Grey/Black are not Oeko-Tex® certified; Heather Dark Grey is 50% cotton, 50% poly; Heather Grey is 90% cotton, 10% poly; Visit www.TrackMyT.com;