Jefferies Socks Big Boys'Crew Socks  (Pack of 6) 76% Cotton/22% Nylon/2% Spandex Seamless Size 5-6 - shoe size 3-7, age 2-3 yrs; size 6-7 - shoe size 6-11, age 3-4 yrs; size 7-8 - shoe size 9-1, age 4-6 yrs; size 8-9 - shoe size 12-3, age 6-10 yrs; size 9-11 - shoe size 6-9, age 10-14 yrs