* Reference size *Size: US 5.5 WOMEN/36 , * US 6 WOMEN/37 , * US 6.5 WOMEN/38 , * US 7 WOMEN/39 , * US 7.5 WOMEN/40 , * MEN US 8 /41 , * MEN US 8.5 /42 , * MEN US 9 /43 , * MEN US 9.5 /44 , * MEN US 10 /45 , * MEN US 11 /46 , * MEN US 12 /47 , * MEN US 13 /48 ,