Thank you for viewing. I tried these on once indoors and then stored them, but my child outgrew them without wearing them outside. These boots eliminate the weak points of boots with a lightweight sole and a side zip for easy on and off, making them easy for children to wear. Although they are lace-up, the side zip makes them easy to put on and take off. 21.0cm. - Size: 21.0cm - Material: Artificial leather (= synthetic leather)