Jefferies Socks Big Boys'Crew Socks  (Pack of 6) 65% Cotton/23% Nylon/10% Acrylic/2% Lycra Size 5-61/2 - Shoe Size 3-71/2, Age 2-3 Yrs; Size 6-71/2 - Shoe Size 6-111/2, Age 3-4 Yrs; Size 7-81/2 - Shoe Size 9-11/2, Age 4-6 Yrs; Size 8-91/2 - Shoe Size 12-3, Age 6-10 Yrs; Size 9-11 - Shoe Size 6-9, Age 10-14 Yrs