They are very comfortable with bare feet or with socks. I normally wear a 8.5 womens size shoe.
As I could not order a half size with these slippers I took a risk and ordered up a size to 9.0. They fit.
They look and feel very durable. I wear slippers daily inside my home, and often walk around outside near home with slippers when I am too lazy to put real shoes on. Slippers I have had in the past have broke down easily in the padding and the sole around the 1 year mark. These seem to feel much better, and longer lasting.