4.5 oz./yd, 100% combed ringspun cotton jersey. Heather is 90/10 combed ringspun cotton/polyester. Granite Heather & Vintage Colors are 60/40 combed ringspun cotton/polyester. White is sewn with 100% cotton thread. Ribbed collar and cuffs. Shoulder-to-shoulder self-fabric back neck tape. Double-needle stitched bottom hem. CPSIA compliant tracking label in side seam . EasyTear label. Youth sizes - XS(2-4), S(6-8), M(10-12), L(14-16), XL(18-20).