Material:   cotton+spandex+Rubber Soles;

4 sizes : 20-21 (12.5cm) suit for 3-6M baby ,the insole is 12.5cm;

              22-23(13.5cm) suit for 7-12M baby,the insole is 13.5cm

              24-25(14.5cm) suit for 13-24M baby .the insole is 14.5cm

              26-27(15.5cm) suit for 2-3Y baby  ,the insole is 15.5cm