So, what others have written is true. He is smaller! I usually have size 45. Here I have Gr. 46.5 bought. Do not go to the specified size, but see in shoe tables after. That's what I did.
In my square flops matters worse, I have a very high instep, wide feet and thus always problems when buying shoes.
And another thing! If you have taken any problems due to a high instep, give at eight shoes that have a closed laces. Since anger is inevitable.
This shoe fits just fine!
Thanks!