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 knit collar ,Self-fabric back neck tape,Double needle sleeves and bottom hem,Side seam construction ,Semi-fitted,EasyTear� label