Size number here is totally different from shoe size chart in your country, but your bare foot length would never change , so you must measure your bare foot with a ruler , then choose size with chart below . Important Notice: 1.2Please kindly measure your foot length by ruler first, when you choose the size. 2.The number marked in the shoes' sole is the Chinese size, not EUR size !!! 3.Feet length is not insole length,insole length is 0.5 cm-1 cm longer than feet length!If you have any problem,please kindly contact us first. EUR size 35 = Chinese size 225 = US size 5 = Foot Length 22.5 cm EUR size 36 = Chinese size 230 = US size 5.5 = Foot Length 23 cm EUR size 37 = Chinese size 235 = US size 6 = Foot Length 23.5 cm EUR size 38 = Chinese size 240 = US size 6.5 = Foot Length 24 cm EUR size 39 = Chinese size 245 = US size 7 = Foot Length 24.5 cm EUR size 40 = Chinese size 250 = US size 7.5 = Foot Length 25 cm EUR size 41 = Chinese size 255 = US size 8 = Foot Length 25.5 cm EUR size 42 = Chinese size 260 = US size 8.5 = Foot Length 26 cm EUR size 43 = Chinese size 265 = US size 9 = Foot Length 26.5 cm EUR size 44 = Chinese size 270 = US size 9.5 = Foot Length 27 cm