Sidis are high quality shoes, but, unfortunately, they just don't fit my normal-width, high-volume/high arch, female feet. I had read that the heel cup on the narrow men's Sidis was the same as on the women's shoe, which doesn't have enough room for my foot. The Sidi USA website said the men's narrow was better than the women's for a high-volume foot. But they still didn't work for me. A regular men's is too floppy in the heel. Boo-hoo.