These slippers are warm, comfortable, and true to size. I wear a size 8.5; and I ordered a 9 Sorel Slipper. The slippers fit me fine. They are well made and remind me of my Sorel snow boots that I have had for 14 years. I live in Florida; and the slippers are perfect to walk around the house. My wife is now wearing them - I may have to get her a pair. These slippers are not cheap; however, you get what you pay for. Highly recommended