I ordered a 4.5 and I received a 5.5 first: they recognized their mistake and sent me a 4.5 and told me to keep the bigger pair anyway. when I tried on the smaller size (4.5) I noticed that it would fit exactly like the 5.5, so I measured 2 left shoes (one 4.5 and one 5.5) and sadly I saw they are exactly the same length (they just have a different size number written on it).<br />Very mad.