I'm an Asian woman wearing US7, thus my EUR should be 37.5. I ordered EUR7 as my sole is skinny. It is comfortable and easy to put on. However, there are still room for my toes but this will not affect normal walking and fall out easily. One thing I need to remind the pretties, please protect your heels as I got cuts for the first time wearing invisible/low-profile socks. It is advisable to wear ankle socks.