5.0 oz., 100% combed ringspun cotton 1x1 baby rib; Heather is 88/12 combed ringspun cotton/polyester; White is sewn with 100% cotton thread; 5 oz. 100% combed ringspun cotton 1x1 baby rib; Heather is 88/12 combed ringspun cotton/polyester 1x1 baby rib; 3/4" double needle covered elastic waistband; Ribbed leg cuffs; Flatlock stitched seams; Side seam construction; EasyTear™ label; CPSIA Compliant tracking label in side seam; Wear Snug Fitting. Not flame resistant. CPSC compliant yellow tag swift