Dear customer, the size of the shoes is subject to the "EU" size shown in the specification. Please check your child& 39;s size carefully. If you have any questions, please contact our operation staff immediately after your purchase. Kids Kid Baby Girls Boys Striped Bling Flat Led Luminous Sport Sneaker Shoes Description It is made of high quality materials, soft hand feeling, no harm to your baby Beautiful and charming design available, make your baby more beautiful Gender: Girl/ Boys Shoe Upper Material: Polyurethane Sole Material: Rubber Fashion Element: Luminous Closure Type: Velcro Style: Casual, fashion, party Package content: 1 pair of baby shoes (without shoe box) Note: Insole length = foot length + 0, 8 cm M, means the standard width The button battery has natural wear and the battery life is 5-10 hours. If the battery runs out, it will not affect the daily use of the shoes. Please allow 1-3mm error due to manual measurement. If you are not sure, which Size: 21 Insole Length: 13.5cm/5.3" Recommended Age: 15-18 Months EU: 22.5 UK: 5.5 US: 6.5 Suitable for: Toddler Size: 22 Insole Length: 14cm/5.5" Recommended Age: 18-24 Months EU: 23 UK: 6 USA: 7 Suitable for: Toddler Size: 23 Insole Length: 14 .5cm / 5.7" Recommended Age: 2-2.5 Years EU: 23.5 UK: 7 US: 8 Suitable for: Toddler Size: 24 Insole Length: 15cm / 5.9 " Recommended Age: 2.5-3 Years EU: 24 UK: 7.5 US: 8.5 Suitable for: Toddler Size: 25 Insole Length: 15.5cm / 6.1" Recommended Age : 3-3.5 years EU: 25 UK: 8 US: 9 Suitable for: Toddler Size: 26 Insole length: 16 cm / 6.3" Recommended age: 3.5-4 years EU: 26 UK: 8.5 US: 9.5 Suitable for: small child Size: 27 insol Lenght: 16.5cm / 6.5" Recommended Age: 4-4.5 Years EU: 27 UK: 9 US: 10 Suitable for: Little Kid Size: 28 Insole Length: 17cm / 6 .7" Recommended Age: 4.5-5 Years EU: 28 UK: 10 US S: 11 Suitable for: Little Kid Size: 29 Insole Length: 17.5cm / 6.9" Recommended Age: 4.5-5 Years EU: 28.5 UK: 10.5 US: 11.5 Suitable for: Little Kid Size: 30 Insole Length : 18CM / 7.1" Recommended Age: 5-5.5 Years EU: 29 UK: 11 US: 12 Suitable for: Little Kid