My husband ordered these for me for Christmas.  I usually wear a 10 from NW, but he ordered 10.5, so I wear thick socks to make these work.  They are very comfortable to wear all day, very easy to walk in and my feet don't feel cramped.  I am 5'11" with long legs, and the top of the shaft comes within a couple inches of my knee, which is pretty incredible since most brands' "knee high" boots come to the middle of my calves.  I highly recommend these boots if you are looking for a sleek look with a little edge, great with dresses or pants tucked in.