Slippers are very comfortable but they do run small , I originally ordered a size 10 (I wear a shoe size 9) and they were too small. I had to return them to Amazon( as usual no return problems) and order an 11. They arrived Tuesday and I was wearing them that nite.  Be aware they still felt tight when I first put them on but soon stretched to fit very comfortably. So if you order these I would order 1&1/2-2 sizes more than your reg shoe size