Adorable white knee socks, perfect for little boys and girls! Pair them with any of our outfits as the perfect accessory. Infant=3-12 months. Toddler= shoe size 3-7 (1-2 years old). XS= shoe size 6-11 (2-4 years old). S= shoe size 9-1 (3-7 years old) . 100% Nylon. Jefferies Socks Brand.