I returned these shoes for a full refund.  All my other slippers have been size 11, which is what i purchased this time.  These were either mis-labelled or the sizing is bloodygodawful; they were a full size too small.  The vendor has a 120 day return policy, but only if the shoes are unworn.  Who, other than Imelda Marcos, buys a pair of shoes and leaves them unworn for 4 months?  The vendor did not give me a refund, so Amazon stepped in and gave me a full refund.  I bought a pair of Tempur-pedic slippers from a different vendor, also here on Amazon.  It's a shame really, because these are a good looking pair of men's slippers, and had the size been right, they would have been quite comfortable.  The sizing is so screwed up, however, I had no guarantee that ordering the next size up would have worked.  As i said, I don't know if the slippers just fit badly, or were mis-marked.  The outsole is designed as in indoor/outdoor sole, so there is no need to change if you are going to check the mail, take out the trash, or even walk down to the corner store.  They were a good slipper in all respects other than the terrible sizing.