10.5-11 Years(39#: Foot Length/insole Length: 22.5 cm/23 cm), 3.5-4 Years(26#: Foot Length/insole Length: 15.5 cm/16.0 cm), 4-4.5 Years(27#: Foot Length/insole Length: 16.0 cm/16.5 cm), 5-5.5 Years(29#: Foot Length/insole Length: 17.0 cm/17.5 cm), 5.5-6 Years(30#: Foot Length/insole Length: 17.5 cm/18.0 cm), 6-6.5 Years(31# Foot Length/insole Length: 18.0 cm/18.5 cm), 6.5-7 Years(32# Foot Length/insole Length: 18.5 cm/19.0 cm), 7-7.5 Years(33# Foot Length/insole Length: 19.0 cm/19.5 cm), 7.5-8 Years(34# Foot Length/insole Length: 19.5 cm/20.0 cm), 8-8.5 Years(35# Foot Length/insole Length: 20.0 cm/20.5 cm), 8.5-9 Years(36#: Foot Length/insole Length: 20.5 cm/21 cm)