As I write this there are 52 other 5 star reviews about these shoes.  I don't think my little review will be read but if you are wondering about which size to order, I ordered the 38 M. Eu. and they fit perfectly.  I am always, always a 7.5 medium in Clarks sandals.  They are simply divine.  I can't imagine wearing anything else this summer.  No break in time has been necessary.