I have a very wide foot which makes it hard to find any kind of shoe that will fit. I tried these in my regular size, 11, and they were too tight. Sometimes I will try a shoe one size larger than my regular size and it will be wide enough and still fit. A 12 was wide enough but a little too long but after adjusting the leather lace that is tied on top and runs along the side and back of the shoe, they fit just right. They are very comfortable and the lining is warm but not too hot like the fleese will sometimes get. These slippers worked out just right for me. They are well made and I like the sole. They look like they should last a long time.