Size Chart(1 inch = 2.54 cm)
Size(CN):21 Insole Length:13.5CM/5.3" Age:15-18Months UK:5.5 US:6.5 M Toddler
Size(CN):22 Insole Length:14CM/5.5" Age:18-24Months UK:6 US:7 M Toddler
Size(CN):23 Insole Length:14.5CM/5.7" Age:2-2.5Years UK:7 US:8 M Toddler
Size(CN):24 Insole Length:15CM/5.9" Age:2.5-3Years UK:7.5 US:8.5 M Toddler
Size(CN):25 Insole Length:15.5CM/6.1" Age:3-3.5Years UK:8 US:9 M Toddler
Size(CN):26 Insole Length:16CM/6.3" Age:3.5-4Years UK:8.5 US:9.5 M Little Kids
Size(CN):27 Insole Length:16.5CM/6.5" Age:4-4.5Years UK:9 US:10 M Big Kids
Size(CN):28 Insole Length:17CM/6.7" Age:4.5-5Years UK:10 US:11 M Little Kids
Size(CN):29 Insole Length:17.5CM/6.9" Age:5-5.5Years K:10.5 US:11.5 M Little Kids
Size(CN):30 Insole Length:18CM/7.1" Age:5.5-6Years UK:11 US:12 M Little Kids
Note: Insole Length=Foot Length+0.8cm; If you are not sure which size or other problems,please contact us to make sure you choose correct size.