The size of regular men’s socks is US 9-11, and if the feet are larger, it is US 11-13. These two sizes can meet 99% of men’s needs.
The size of women’s socks is US 6-9, which is also suitable for young boys, while US 4-6 is suitable for students.
The size range for children is relatively small, so they are selected based on age, such as 1-2 years old, 2-5 years old, 5-8 years old, 8-10 years old, while babies are selected based on month.