Although I usually wear a size 11, I have found in reviews that a non-trivial percentage report that a size 11 is small. I previously tried a size 11 at Clarks and found it to be tight so I bought a 11Β½. Turned out to be a good choice. The first day I put them on I wore them for about 14 hours without getting tired. Use them for an elegant everyday look and for walking.