The weave Vionic Farrah sandals run a half size larger than the lizzard Farrah. It took return and try smaller size for me to get this right. I wear 7.5M in the Farrah lizzard but a 7 M in the weave. In other brands I wear an 8. These are very comfortable sandals, much arch support and do not hurt where I had bunion surgery. Great for knee pain relief.