4.5 oz. 100% combed ringspun cotton fine jersey,Ash is 98/2 combed ringspun cotton/polyester,Heather is 90/10�combed ringspun cotton/polyester,CVC colors are 60/40 combed ringspun cotton/polyester,Ash and White are sewn with 100% cotton thread,Topstitched ribbed knit collar,Shoulder-to-shoulder self-fabric back neck tape,Double needle sleeves and bottom hem,Side seam construction,EasyTear� label