We advising you can choose size according your foot length in our size table . For example, If your foot length (Heel to Toe) is 270mm, please choose size 10=44 in this model. Fit for foot length 225mm is Size 4.5 =35 Fit for foot length 230mm is Size 5 =36 Fit for foot length 235mm is Size 5.5 =37 Fit for foot length 240mm is Size 6 =38 Fit for foot length 245mm is Size 6.5 =39 Fit for foot length 250mm is Size 7 =40 Fit for foot length 255mm is Size 8 =41 Fit for foot length 260mm is Size 8.5 =42 Fit for foot length 265mm is Size 9.5 =43 Fit for foot length 270mm is Size 10 =44 Fit for foot length 275mm is Size 11 =45 Fit for foot length 280mm is Size 12 =46 Fit for foot length 285mm is Size 13 =47 Fit for foot length 290mm is Size 14 =48