♥♥♥♥ size : Fit for 1-8 year-old kids

♥  ♥  ♥     size 16 =length16cm=Inside length 15cm (1-3 years old) 
♥  ♥  ♥     size 18 =length18cm=Inside length 16cm (3-4 years old)
♥  ♥  ♥  size20=length20cm=Inside length 17cm (4-5 years old)
♥  ♥  ♥  size21=length21cm=Inside length 18.5cm (5-6 years old)
♥  ♥  ♥ size22=length22cm=Inside length19.5cm (7-8years old)
♥  ♥  ♥ size23=length23cm=Inside length20.5cm (8-9years old)