4.5 oz. 100% combed ringspun cotton fine jersey Ash is 98/2 combed ringspun cotton/polyester Heather is 93/7 combed ringspun cotton/polyester CVC colors are 60/40 combed ringspun cotton/polyester Ash and White are sewn with 100% cotton thread Topstitched ribbed collar Shoulder-to-shoulder self-fabric back neck tape Double needle sleeves and bottom hem Side seam construction CPSIA compliant tracking label in side seam EasyTear™ label