Great! I usually wear 11.5-12 and 45 is perfect. They are very comfortable for classic shoes. I bought them mainly for the days when I'm walking around a lot in the office or at the airport, but I'll probably wear them every day! They look classy and I was lucky enough to get them on sale, although now I would pay full price to wear them. I love this style of shoes, have worn them for many years and have tried many different brands, both affordable and expensive. If you're looking for the most beautiful and comfortable slippers, you've come to the right place.