I was looking for rubber soled slippers because my tile floors are so cold that the cold seeps through soft soled slippers (even with socks on!). I read many reviews and based on what I read, I ordered a size up (technically a 1/2 size up because I wear 7.5) and a wider width. My feet are borderline as far as width and I wear socks with my slippers 99% of the time so I thought I might need too. However, the first pair was too big and too wide. After an hour or so of wearing, they were slipping off as a I walked. Returned them and ordered the "right size" (technically a 1/2 size small) and medium width. Yes, they were tight the first few days, but they break in and now they are absolutely perfect with and without socks. I think the people complaining about them running small don't give them time to loosen up. If you prefer your slippers to fit more like shoes than traditional slippers, I suggest buying the correct size first.