I love these slippers that are a mix-and-match style with my printed nightgowns.  I wear a 9-1/2 shoe, bought the Size 9-10 and they fit well.  They could have a little more arch support, but I've found that lacking in lots of slippers.  I no longer wear them outdoors - they wear out too fast - and this is my second pair!  Great for lounging around the apartment.