Here is the size chart, please get the insole length information and measure your feet length to make sure you are buying the correct size :
Size(EU): 34 ;Insole Length(Inch/cm):8.66"/22cm
Size(US): 5.5; Size(EU): 35 ;Insole Length(Inch/cm):8.86"/22.5cm
Size(US):6.5;Size(EU): 36;Insole Length(Inch/cm): 9.06"/ 23cm
Size(US):7; Size(EU):37 ;Insole Length(Inch/cm):9.25"/ 23.5
Size(US):8;Size(EU):38 ;Insole Length(Inch/cm):9.45"/24cm
Size(US):8.5; Size(EU): 39 ;Insole Length(Inch/cm):9.65 "/24.5cm
Size(US): 9; Size(EU):40;Insole Length(Inch/cm): 9.84 "/25cm
Size(US): 9.5;Size(EU):41;Insole Length(Inch/cm): 10.04 "/25.5cm
Size(US):10;Size(EU):42;Insole Length(Inch/cm): 10.24 "/26cm
Size(EU): 43 ;Insole Length(Inch/cm):10.43 "/26.5cm