As others have stated, ECCO shoes run big, I normally take size 11 and size 44 is the perfect fit for me even though it is advertised as a 10-10.5
This is my fifth pair of ECCO's and probably the best quality yet, I like that is has a smooth toe and very high quality leather both in and out. Great business casual/dress shoe that wears for a very long time and provides superb comfort for anyone on their feet for extended periods.
Highly Recommend these classy slip-on's!