I was so nervous ordering these boots after all the reviews. I am glad I did! I have an average foot, medium arch. My foot slipped right in without a problem. I think if I had thick socks then I would've had a problem. These boots are very lightweight, have a medium arch, fit comfortably.  I don't know how warm they are going to be, but they are adequate for running around town in the winter. They are a nice casual boot that I am thrilled to have. I only gave them 4 stars as they could be better insulated.  I am very happy I ordered a 1/2 size larger. I would have needed a full size larger to wear thick socks.