I have been wearing Sidi shoes since the 90's (I still have a pair from 2003) I wear a 38.5 or 39 and have a fairly narrow foot'these are perfect! I also like that a there are replacement parts and they are women specific shoes. This particular shoe is a little more relaxed than my race specific Sidi's and I wear them for long training rides and on my fixed gear Duende Pegoretti made and painted by the master himself, Dario Pegoretti. I'm a Sidi customer thru and thru.
