I usually wear a size 6 medium, pretty universally across all shoe brands I've tried, which was what I ordered, but these shoes were unfortunately just a little too snug, with just a bit of my feet extending beyond the sole. They were otherwise very comfortable but I had to return them. The next size up was priced ridiculously more than this size pair, so I've given up on this style/color combination. It's too bad as I've had other Trotters shoes that were very comfortable.