6-12 months Organic combed cotton rib knit Super-smooth flatlock seams Handy neck-to-knee zipper has protective top tab Ready-to-grow cuffs keep the fit STANDARD 100 by OEKO-TEX® | 03.U.9375 HOHENSTEIN HTTI | Tested for Harmful Substances | www.oeko-tex.com/standard100 GOTS certified by OTCO Prewashed Imported Wear snug fitting; not flame resistant.