I wear a 7 in street shoes, but my women's Sidis in size 39 are just on the edge of being too small - they fit like a 6.5. I can't imagine them fitting anyone who wears a 7.5 to 8 in street shoes. I also have a hard time believing the mens' and womens' Sidi sizing is the same as that is very unusual - I normally wear a couple sizes smaller in mens' shoes. This is something I'd be very careful about ordering online unless I was prepared to pay the reverse shipping to return them.

Good luck!
Emily