How do I select my size? 1:Measuring your foot length Make sure you're on a flat surface,Trace the outline of your feet on a piece of papar. Keep your writing utensil as perpendicular as possible so you get the most exact measurements. Once your feet are traced,use a ruler to measure from your heel to the tip of your longest toe. 2.Then use this shoe size chart to convert the length of your feet to U.S shoe size. For example If you choose US8.5.We will send size EUR 40,It comes with 25.0cm insole length If you feet are fat,you may choose the bigger one Hope this will helpful for you, and please contact us freely if you have any problem in the size :) Heels high:11cm Size:35 36 37 38 39 40 41 42 43 Size info: US size 4.5=EUR size 35=Foot length 225mm US size 5.5=EUR size 36=Foot length 230mm US size 6=EUR size 37=Foot length 235mm US size 7=EUR size 38=Foot length 240mm US size 8=EUR size 39=Foot length 245mm US size 8.5=EUR size 40=Foot length 250mm US size 9.5=EUR size 41=Foot length 255mm US size 10=EUR size 42=Foot length 260mm US size 10.5=EUR size 43=Foot length 265mm