Gr&ouml;do (Groedo) Organic Cotton Children Kids Socks (3-pack) Made in Germany Machine washable 85 F degrees (30 C degrees) 98% organic cotton, 2% elasthane Certified by GOTS (Global Organic Textile Standard) Made in Germany Size 1-2 years (EU 19-22). Size 3-4 years (EU 23-26). Size 5-6 years (EU 27-30). Size 7-8 years (EU 31-34). Size 9-10 years (EU 35-38).