I had, as I only can wear flat shoes after surgery, directly ordered 2 pairs of ECCO ballerinas. Usually for me Gr. 40 optimally. Unfortunately this size is (in Gege set to the other ordered model that fits perfectly) by 1/2 to 1 no. Too big from. But as you can guess anyway, as super-comfortable, this shoe and the processing is also top, I will raise him again in Gr. 39 order in the hope that this will not too small fails ... ;-)