Material Composition: Cotton; Size S: 4.3 - 5.1 inches (11 - 13 cm) (1-3 years), M: 5.1 - 5.9 inches (13 - 15 cm) (4 - 6 years), L: 6.3 - 7.5 inches (16 - 19 cm) (7 - 9 years). Made of breathable cotton material, so they are highly absorbent and sweat-absorbent.The bottom has non-slip dots and excellent anti-tip features, making it safe for babies to practice walking.Its not too thin and breathable and soft.It gently protects your babys skin and is highly elastic and comfortable to wear.Carefully sewn, these baby safe socks can be used with confidence.We are committed to producing kids socks to protect every step of your childs life.