A note to all new Scarpa buyers; Scarpa generally offers TWO half sizes in between each U.S. whole size.  For example, they offer the 45 AND the 45.5  You could say that they are actually 11.33 and 11.66, respectively, and both are technically in between 11 and 12 U.S sizing. Try them on to be sure.  I had to return the size 45's and go for the 45.5, but that is what worked for me.  The shoe itself is great so far.  Sturdy and comfortable.  I plan to buy another pair if they hold up well in the long run.