I normally wear a size 15 or 16 (depending on the brand). With 31cm feet, the size 15 comes as a European 48. That should fit up to 31 cm, but these are closer to the 30.2 cm range. I know 0.8cm is not a big difference, but when your foot is 31cm long, the difference matters. I would say these are size 14 US, had to return, but they look like great shoes.These shoes are excellent for the price. They are stiff and quite comfortable for cycling shoes, as the mesh upper is quite soft. They do hurt a bit if you tighten the laces too much before a hot ride, though. The durability is a bit suspect, however. After only about two weeks of riding with them (so about 800 kms) the material in the heel is already worn. This is in part because I my feet don't track true through the pedal stroke and so my heel rubs on the crank, but I have had plenty of other shoes that have withstood the wear better. But they were both more expensive and their uppers were quite a bit stiffer (and consequently less comfortable). But I don't think that one should have to chose comfort versus durability. With well placed reinforcements one can clearly have both.I was looking for good cycling shoes that didn't look tacky, shining, and flat out horrible looking. These shoes are really attractive and have an urban look. It took a bit to break in but they're perfect for my Peloton sessions and riding.A little tight.. i learned to leave laces a little loose but otherwise ok.Used for indoors only.Excellent bike shoe-comfortable and quality productI spent over two years looking for the perfect road shoes!! Finally found them!! I trully recommend this. Very comfortable!!!Bought for Peloton use, love the knit upper.Best cycling shoes for hot weather by far.Ich bin schon seit vierzig Jahren mit dem Rennrad unterwegs und brauche bequeme gut durchlueftete Schuhe. Dieser Giro Empire Groesse 48 ist perfect und ich werde dann wieder denselben Schuh kaufen…..Nice Product