2.Our US Size is Not Standard US Size ,please choose size according to your foot length. US size 6.5=Chinese size 38= 24.5 cm foot length; US size 7=Chinese size 39= 25 cm foot length; US size 7.5=Chinese size 40= 25.5 cm foot length; US size 8=Chinese size 41= 26 cm foot length; US size 8.5=Chinese size 42= 26.5 cm foot length; US size 9=Chinese size 43= 27 cm foot length; US size 9.5=Chinese size 44= 27.5 cm foot length; US size 10=Chinese size 45= 28 cm foot length; US size 10.5=Chinese size 46= 28.5 cm foot length; US size 11=Chinese size 47= 29 cm foot length; US size 11.5=Chinese size 48= 29.5 cm foot length; Tips: Usually chinese size is smaller than Eur, Russia, Brazil size, so please choose size according to your foot length. Usually insole length will add (0-1.5) cm than foot length to keep your foot fit well; but if shoes toe shape is Pointed Toe, then insole length will add (1-2.5) cm than foot length. Kindly Notice: We are Factory Direct Selling!!! So we guarantee the highest quality and best price among all sellers. we support retail, wholesale, drop shipping, any questions just feel free to contact us.