Upper with leather material, breathable pigskin inside, very suitable for children who like sporting, comfortable and breathable. And also whether it is with school uniform or casual wearing are all very cute. In order to avoid size issue,we want to notify you that these styles of shoes are all for toddler, little kids, big kids not for infant. Chosing the most suitable size for your kids accordance with our product's description; Usually, foot length+0.5CM/1CM=inner sole length of the shoe; US8.5=15.2CMs inner sole length of the shoe;(A printed label 16.7CM) US9.5=16.5CMs inner sole length of the shoe;(A printed label 17.4CM) US10=17CMs inner sole length of the shoe;(A printed label 18CM) US10.5=17.8CMs inner sole length of the shoe;(A printed label 18.7CM) US11=17.8CMs inner sole length of the shoe;(A printed label 18.7CM) US11.5=18CMs inner sole length of the shoe;(A printed label 19.2CM) US12.5=18.9CMs inner sole length of the shoe;(A printed label 19.8CM) US13=19.8CMs inner sole length of the shoe;(A printed label 21.2CM) US1=20.5CMs inner sole length of the shoe;(A printed label 21.7CM) US1.5=20.5CMs inner sole length of the shoe;(A printed label 21.7CM) US2.5=21.3CMs inner sole length of the shoe;(A printed label 22.4CM) US3=21.5CMs inner sole length of the shoe;(A printed label 23CM) US4=23.2CMs inner sole length of the shoe;(A printed label 23.7CM) US4.5=23.5CMs inner sole length of the shoe;(A printed label 24.3CM);