The stock must have been low, because the largest size they had was an 8 1/2...which is my shoe size, so I ordered them.  Unfortunately, these just fit...barely.  Normally I wouldn't care with slippers, but these have a hard, cork sole that cradles your heel.  So if you accidentally step on the very back edge of the heel, it's like putting all the weight of your heel on the edge of a ruler!  Ouch!!  I didn't return them, because they are really warm, and I think I can tolerate them in the winter.  But order at least a 1/2 size up...or you may be sorry.