100% certified organic combed ringspun cotton; 3/4" seamed collarette; double-needle stitching on sleeves and bottom hem; AnvilOrganic TearAway™ label and shoulder-to-shoulder tape; for more information visit www.TrackMyT.com; White and Natural are sewn with 100% cotton thread; Heather Grey is 90/10 certified organic ringspun cotton/poly;