I have the same model without the lace eyelets in size 45. This fits well and has a bit of air. Then I ordered this model here, also in size 45, and it is clearly too small. Here you have so 1 Size drauflegen when ordering. The shoe itself is incredibly good. The other model I use already for 8 months, it is in my leisure time shoe. The size designation would be more accurate and consistent maintenance. Then saves you need to exchange.