My 1st pair was given to me and they were a size 12.  I wore them out but wore them more as a slip on, the back heal was smuched instead of pull over my heal.  My 2nd pair which are the charcoal I ordered a size 13 but fitted more like a size 12.5 and were to tight. I reordered the next size up14 a little big but much better than the 13s. They will stretch a little.