Due to the many reviews I have also ordered a couple. As was to be read, they fall Technically size from exactly. I can only confirm this! Have ordered 40.5, and thus 40.5 and they fit like a glove! They were from the 1 second very comfortable - even after prolonged running no bubbles or the like.
When black overshoe pair next to the black laces is a few white case.
Unfortunately my size was expensive with 44 Euros (the other sizes there for 23 Euro) But they are definitely worth the price!
Will I order again .... sure are still soooo many colors :-)))