These shoes are well made, flexible, and provide plenty of room for your feet and toes, so they are comfortable with respect to this factor. I bought size 10D. However, I found that the sole of this shoe is constructed with protruding hard rubber knobs which press upon the ball of your feet when walking, so they are not comfortable with respect to prolonged walking and standing especially on hard surfaces. In addition, they will slip on wet pavement. I tried replacing the insole with a sofsole insole and that helped but did not alleviate the problem. I don't recomend these shoes for prolonged walking on hard surfaces, but will say that they are very comfortable when worn inside on carpets such as at the office or at home.