Children's shoes are made of breathable felt. They are mounted on a Flexi sole, which is extremely flexible and ventilated. Easy Velcro fastening. The higher upper will protect the ankle, and the stiffened heel counter will ensure proper stabilization. These shoes are recommended by orthopedists. In addition, they have the "Healthy Foot" sign. When choosing a size, please refer to the size chart. 18-12/19-12,5/20-13/21-14/22-14,5/23-15/24-15,5/25-16,5/26-17cm