Children's shoes are made of breathable felt. They are mounted on a flexi sole that is extremely flexible and ventilated. Easy Velcro fastening. A higher upper protects the ankle and a reinforced heel ensures proper stabilization. These shoes are recommended by orthopedists. In addition, they have a "Healthy Foot" sign. When choosing a size, 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