Age: 6-9months (Insole Length - 11.5) (EU Size 20) & (UK Size 3)Age: 12-18months (Insole Length - 13.5) (EU Size 22) & (UK Size 5)Age: 2-3years (Insole Length - 16) (EU Size 24) & (UK Size 7)Age: 3-4years (Insole Length - 16.5) (EU Size 25-26) & (UK Size 8)Age: 5years (Insole Length - 18) (EU Size 28) & (UK Size 10)Age: 6years (Insole Length - 21) (EU Size 30) &( UK Size 12)