Material:   cotton+spandex+Rubber Soles;

3  sizes : 18-19 (11.5cm) suit for 0-3M baby , the insole is 11.5cm

                          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