Gr&ouml;do (Groedo) 100% Virgin Merino Wool Children Socks (1 Pair) Made in Germany 100% virgin wool (the wool one gets from shearing a lamb for the first time). Certified by GOTS (Global Organic Textile Standard) Really cute "Handmade-Look" pattern. Thick, warm, and soft. Size 1 Year US shoe size 3 1/2 - 4 (foot length 4 3/8 - 4 5/8"). Size 2 Years US shoe size 5 - 6 (foot length 4 7/8 - 5 1/8"). Size 3 Years US shoe size 6 1/2 - 7 1/2 (foot length 5 3/8 - 5 5/8"). Size 4 Years US shoe size 8 - 9 (foot length 5 7/8 - 6 1/4"). Size 5 Years US shoe size 10 - 10 1/2 (foot length 6 1/2 - 6 3/4"). Size 6 Years US shoe size 11 1/2 - 12 (foot length 7 - 7 1/4"). Size 7 Years US shoe size 13 - 1Y (foot length 7 1/2 - 7 3/4").Size 8 Years US shoe size 1 1/2 Y - 2 Y (foot length 8 - 8 1/4").