1.Please measure yourfoot lengthwith below method. US size 6.5=Chinese size 38= 24.5 cm foot length; US size 7.5=Chinese size 40= 25.5 cm foot length; US size 8.5=Chinese size 42= 26.5 cm foot length; US size 9.5=Chinese size 44= 27.5 cm foot length; US size 10.5=Chinese size 46= 28.5 cm foot length; US size 11.5=Chinese size 48= 29.5cm foot length; Usually chinese size is smaller than Eur, Russia, Brazil size, so please choose size according to your foot length. Kindly Notice:We are Factory Direct Selling!!!So weguarantee the highest quality and best price amongall sellers. we supportretail, wholesale, drop any questions just feel free to Genuine Leather Adult Sandals Big Size Covered Toe Summer Beach Shoes Breathable Hole Sneakers Outdoor Quick Drying Casual Sandals