This is my 4th pair of UIN shoes. They are always very clever designs, and fit true to size for me. There is a tiny bit of variation in my shoes, some a little bigger across the instep, etc. but overall fine. Very lightweight and soft. I get compliment every single time I wear a pair.
My normal size is 8.5/40 so I ordered that size first. They were huge!! So I returned that pair and ordered a size 8/39.....they were waaay to small. So thinking my first pair may have been mismarked, I ordered the 8.5/40 again and they fit perfectly! I believe the first pair must have been mismarked.