Premium quality school socks. * Long lasting and excellent fit socks. * Fiber: 80% cotton, 17% polyamide and 3% lycra elastane. * Machine washable. * Sizes: US 4-6 (Age: 1-2 years), US 7-9.5 (Age: 2-4 years), US 10-13.5 (Age: 5-7 years), US 13.5-4(Age: 7-11 years), US 5-7 (Age: 13+ years).