Size: 23 UK: 7 EU: 25 Recommended age: 2.5-3 Years Insole Length: 15cm/5.91 Suitable For: Toddler US: 7.5 Size: 24 UK: 7.5 EU: 25.5 Recommended age: 3-3.5 Years Insole Length: 15.5cm/6.10 Suitable For: Toddler US: 8 Size: 25 UK: 8.5 EU: 26 Recommended age: 3.5-4 Years Insole Length: 16cm/6.30 Suitable For: Toddler US: 9 Size: 26 UK: 9 EU: 27 Recommended age: 4-4.5 Years Insole Length: 16.5cm/6.50 Suitable For: Little Child US: 9.5 Size: 27 UK: 10 EU: 28 Recommended age: 4.5-5 Years Insole Length: 17cm/6.69 Suitable For: Little Child US: 10.5 Size: 28 UK: 11 EU: 28.5 Recommended age: 5-5.5 Years Insole Length: 17.5cm/6.89 Suitable For: Little Child US: 11.5 Size: 29 UK: 11.5 EU: 29 Recommended age: 5.5-6 Years Insole Length: 18cm/7.09 Suitable For: Little Child US: 12 Size: 30 UK: 12 EU: 30 Recommended age: 6-7 Years Insole Length: 18.5cm/7.28 Suitable For: Little Child US: 12.5 Size: 31 UK: 13 EU: 31 Recommended age: 8-9 Years Insole Length: 19.5cm/7.68 Suitable For: Little Child US: 13.5 Size: 32 UK: 13.5 EU: 32 Recommended age: 9-9.5 Years Insole Length: 20cm/7.87 Suitable For: Big Kids US: 1 Size: 33 UK: 1 EU: 33 Recommended age: 9.5-10 Years Insole Length: 20.5cm/8.07 Suitable For: Big Kids US: 1.5 Size: 34 UK: 1.5 EU: 33.5 Recommended age: 10-10.5 Years Insole Length: 21cm/8.27 Suitable For: Big Kids US: 2