Really nice warm shoes. I am a size 41 and ordered a size 42, which fits perfectly (with about 1cm of additional space).
However there is one big design flaw. The sole has a cut at the front of the shoes, which in wet weather conditions functions as a spoon! It lifts the water (and dirt) from the road up on the front of your shoes. See photos. This means you need to clean your shoes after every walk in the rain.