Ordered these as a US 11 - also identified as a 10 UK (I normally wear a US 10.5 and was advised that I should order a half size up -- they arrived as an AU size 9 (US 11, UK 10) -- could NOT get them on my feet AT ALL -- BE VERY WARY ABOUT ORDERING THESE -- at this point, I would not know WHAT to order but these numbers make NO sense.  (and to make matters worse, I expedited the delivery - so much for that.)