Size ( Inner length= children's feet length + 0.8cm~1.2cm)26=Inner length 16.5cm27=Inner length 17cm28=Inner length 17.5cm29=Inner length 18cm30=Inner length 18.5cm31=Inner length 19cm32=Inner length 19.5cm33=Inner length 20cm34=Inner length 20.5cm35=Inner length 21cm36=Inner length 21.5cmPackage includes:1 Pairs of kids shoes(without box)Warm Tips:1. This is not the standard UK/EU size, it's our own size chart. Pls choose the size according to the shoes insole length. (1 inch=2.54cm)Suggest Shoe insole length= Baby's feet length + 0.8cm to 1.2cm according to your needs, but it's only for your reference) Kids grows fast, choose a little bigger size that kids will not feel tight and the shoes can be wore for longer time.For example: If the your kids actual feet length is 18cm, you can try the shoes with 18.5cm-19cm insole length.If your kids actual feet length is 18cm (but the feet are fat and wide), you can try shoes with insole length 19-19.5cm.2. The shoes insole length is measured manually, pls allow 1-2cm deviation3. If you choose wrong size, return postage is on your side, please understand.4. Colors may be slightly different depending on computer and monitor settings.Thanks for your understanding.