4.5 oz., preshrunk 100% combed ringspun cotton; 30 singles; Heather Grey is 90/10 combed ringspun cotton/poly; Heather colors are 60/40; features a TearAway label; seamed collar; shoulder-to-shoulder tape; tubular construction; classic fit; Youth styles carry a TrackMyT? number in bottom hem traceable on TrackMyT.com; double-needle sleeve and bottom hem; Oeko-Tex? Standard 100 Certified;