I was happy when I put them on and they were just right. I was looking for something I could sleepily climb into in the morning. I usually get an 8-8.5 depending on the shoe, but I'm moving towards a slightly larger size. I chose room 9 thinking I could wear socks in winter and would appreciate an extra room. I like to wear them almost every day without socks, they are warm, comfortable and not too big like a sock substitute. They are a bit wide but no problem, perfect for winter socks. I only slipped once when there was some polish on the floor. I love the rich gray color and I'm glad I went for a neutral one.