5.5 oz./yd², 100% combed ringspun cotton jersey, 22 singles; Heather is 90/10 combed ringspun cotton/polyester; CVC colors are 60/40 combed ringspun cotton/polyester; White is sewn with 100% cotton thread; Ribbed collar; Should to shoulder self-fabric back neck tape; Double-needle hem sleeves and bottom; CPSIA compliant tracking label in side seam; EasyTear™ labelYouth sizes: XS(2-4), S(6-8), M(10-12), L(14-16), XL(18-20);