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; Ribbed collar and cuffs; Self-fabric back neck tape; Double needle bottom hem; 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 tacked to garment.; Machine washable/ tumble dry low; Fit: Infant Unisex; Note: Color descriptions indicate Body/Trim colors, e.g. Kelly/ Red indicates Kelly shirt with Red Trim