♥  ♥  ♥   Inside length 16.5-17cm (2.5-3.5 years old)
♥  ♥  ♥  Inside length 18.5-19cm (4-5 years old)
♥  ♥  ♥ Inside length 20.5-21cm (5-7years old)
♥  ♥  ♥ Inside length 20.5-21cm (7-8years old)
♥  ♥  ♥ Inside length 20.5-21cm (8-10years old)