first, i wear anywhere from 9 to 10 in a boot, so i went with a 9.5.  WAY too small.  then i went to a 10, and it was "ok" but calve was a bit snug to say the least.  then the buckle ripped clean off.  (very cheaply made).  save your money... both pairs plus looked like they were worn before.  if it were not for AMAZON and their AWESOME return policy, this would have been a nightmare!  thanks amazon!