I received these on a Friday, so I was able to break them in over a weekend. Very warm and comfortable, even without wearing socks. I ordered a size 9, my actual shoe size, and it fits perfectly. I really like the soft soles -- you can curl up on the couch or bed without worrying about scuffing up the upholstery. (At the same time, I definitely wouldn't wear these anywhere other than indoors, on carpeting or finished floors.)