I had 2 lengthy outdoor opportunities to test these boots. They fell short of my expectations. They're a bit heavier than I thought they would be. Even after 6 hours of being worn, they seem a little stiff. My biggest disappointment though was the boots inability to keep my feet warm. The first time I wore them the temperature was around 4 degrees. Within an hour I could start feeling discomfort from the cold and by an hour and a half I had to come inside to warm up. I think these boots were rated to -45 degrees. I don't know where they came up with this rating, but I greatly disagree with it. 3 stars

The previous reviewer said that his feet got cold after and hour or so.Thats being generous; these boots can't keep your feet warm for five minutes even if the temperatures well above 20, especially if you aren't walking. If you plan on standing at a bus stop or doing something else where you are going to be more or less stationary forget about it. They aren't waterproof either. i had these same problems to a greater degree with Colombia's Gortex winter hiker, can;t remember the model name. I exchanged them for these. Like every other company these days, Columbia is selling crap and keeping their fingers crossed that you won't return them, and that you will blame yourself for being cold and not the boots. 2 stars