In my size (45) they were comfortable from the first try, while over time they open up and take the shape of the foot, like all shoes in this series.

In winter temperatures they are adequately warm.

[edit 16/04/24] Four stars because, three months later, it is still impossible to wear without a shoehorn. The shoe is comfortable and well-fitting, but the foot struggles to pass through the "neck", which is not flexible enough.