5 oz., 100% combed ringspun cotton 1x1 baby rib,Heather is 88/12 combed ringspun cotton/polyester,White is sewn with 100% cotton thread,Ribbed collar and cuffs,Self-fabric back neck tape,FProductlock stitched seams,Double needle bottom hem,Side seam construction,EasyTear� label,Safety:�Wear snug fitting. Not flame resistant,CPSC compliant yellow hang tag swift tacked to garment,CPSIA compliant tracking label in side seam