5 oz., 100% combed ringspun cotton 1x1 baby rib; Heather: 90% combed ringspun cotton, 10% polyester; White is sewn with 100% cotton thread; 1/4" single needle binding on neck; Double needle hem ruched sleeves; 1/4" single needle binding on gathered skirt hem; Side seam construction; EasyTear� label; CPSIA Compliant tracking label in side seam