size 30---size 43

United States  Size 4 = size 34=22cm

United States  Size 5 = size 35=22.5cm

United States  Size 5.5 = size 36=23cm

United States  Size 6= size 37=23.5cm

United States  Size 6.5 = size 38=24cm

United States  Size 7= size 39=24.5cm

United States  Size 7.5 = size40=25cm

United States  Size 8 = size 41=25.5cm

United States  Size 8.5 = size 42=26cm

United States  Size 9 = size 43=26.5cm