I bought my first pair of these in pink. I usually wear a size eleven medium in DrScholl's oxfords with socks. So, I ordered a size ten medium in these to wear barefoot. They run very large. I am glad I got the pink ones because I also have the pink Haband crew socks and they help to snug up the fit. These shoes are very light & soft and the leather seems to give a little. I would order these two sizes smaller than the oxfords.