The sole is very well insulated, so that comes from below by no refrigeration. The boots are generally well fed even at minus 10 degrees I did not find it cold. 5 extra star for sole and Profile absolutely nonslip. Where am I slipped with my other winter footwear, the boots do not have very good grip. The shaft is wide enough that you can tuck the pants. However, I found that the quantities to be somewhat small, perhaps by feeding? Anyway, I took it one size larger than my usual size.
Of course, the boots are not very sexy - but the value for money in my opinion is very good. And, unlike with all the modern winter boots you get here does not guarantee wet feet.