I bought this in a size 11medium and the shoe feels true to size. The toe-box isn't too small or shallow, and the arch feels like it's in the right spot for a larger sized pump. I'm glad I didn't go a size up as I often do as this leather pump had some flexibility once it'd been worn for a bit. This only made the heels more comfortable. The styling and color are great! Because there isn't a platform, I feel more comfortable wearing them in work and church settings. I get lots of complements on these heels :)