4.5 oz./yd, 100% combed ringspun cotton, 30 singles. Heather is 93/7 combed ringspun cotton/polyester. Granite Heather, Vintage Camo & Vintage Smoke are 60/40 cotton/polyester. White is sewn with 100% cotton thread. Topstitched ribbed crewneck. Double-needle stitched bottom hem. Shoulder-to-shoulder self-fabric back neck tape. Ribbed cuffs. Side seam construction. CPSIA compliant tracking label in side seam. EasyTearlabel.