22-24 yards: 0-1 years old, the proposed length of 10-13cm (socks 11cm)

23-26 yards: 2-3 years old, the proposed foot length 14-16cm (socks 13cm)

27-30 yards: 4-6 years old, the proposed foot length 17-20cm (socks 15cm)

31-34 yards: 7-12 years old, it is recommended that the foot length 20-23cm (socks 17cm) (37 yards can be worn)
0-6 months: feet long 10 below;

6-12 months: feet long 10-12cm;

12-18 months: feet length 12-13cm;

1 year and a half -2 years old: foot length 13-14cm;

2 years old to 3 years old: feet length 14-15cm

3 years old -4 years old: feet long 15-16cm

4 years old -5 years old: feet long 16-17cm

5 years old -6 years old: feet long 17-18cm