5.0 oz., 100% combed ringspun cotton 1x1 baby rib ; CVC Colors are 60/40; Heather is 88/12 combed ringspun cotton/polyester; White is sewn with 100% cotton thread; Flatlock stitched seams; Double needle ribbed binding on lap shoulder neck, shoulders, sleeves and leg opening; Snap tape technology that keeps kids safe and secure; Innovative three snap closure; Side seam construction; Easy tear label; CPSIA compliant tracking label in side seam