I just received them, comfortable size 45 (Adidas 44.5/Asics 45 sports shoes), they have arch support and fit perfectly on the foot. They seem to be of good quality... the fabric on the upper part is high-quality, not like some thin plastic ones that leave marks on the skin and easily get cut. Time will tell, I will come back after the summer.

Update: I was a bit late. They are of excellent quality... I have walked many kilometers and they haven't had any issues, the only negative thing is that the print faded a bit, but other than that, they are comfortable and the foot doesn't slip inside. They didn't have any issues when they got wet. They are good for a second summer. I got the "blue" ones.