US size 6-7 =Send Brand Size 40/41=25.7 CM,
US size 7.5-8 =Send Brand Size 42/43=26.7 CM,
US size 9-9.5=Send Brand Size 44/45=27.7 CM,
US size 10-11=Send Brand Size 46/47=28.7 CM,
US size 11.5-12=Send Brand Size 48/49=29.7 CM,