I work on a boat daily in all types of weather and bought these for the freezing weather we are having (as well as for hunting in the late fall). They fit perfect right out of the box, I did buy them a 1/2 size larger as another reviewer suggested and they were perfect. They are warm, the soles are sure gripping especially on a slippery deck or dock. I wear them 12 hours a day and my feet are dry and feel great in the evening, they are comfortable!