I bought a size up, as suggested, and they were just that....one size too big.  So I had to return them.  The slippers themselves are very nice and well made.  The return process with Amazon was...well..just amazing!  I put the slippers back in the box, printed out the pre-paid label (FREE return shipping) and dropped them off at my local UPS Store.  Two days later I had my refund.  Again, amazing.  Thanks Amazon! Also, when the slippers were delivered I got a text message telling me they had been delivered.  Got my flashlight and went outside, and there they were!