I used these boots for the month of October in the Alaskan arctic, mainly on barrier islands and sea ice. Temperatures were 0-25 degrees (fahrenheit) and we often had 5-15 mph winds. I was outside, crouching and mostly not moving, for 1-2 hours at a time. My feet did occasionally become cool, but they never became cold to the point of discomfort. These boots possess thick insulation, and a layer of waffled material under the foot, which must help trap warm air.

One note - I wear about a size 9 shoe, and I ordered size 10 boots. When the boots arrived I almost sent them back because they felt so tight; however, after several days of use, the insulation packed out to a surprising degree and the boots now almost feel too large.

I have a pair of Baffin's that aren't this model but they are super nice. I live in Montana and I use them when the snow is 2 feet or more, or out icefishing. I read some of the questions, and from my experience I have some input. I would never work in these. They're way too bulky and heavy, and no steel toe. Plus I could see falling or tripping in them if you were carrying something heavy through the snow or on ice. I always end up working in my old Vasque Apex boots with gators for work. I don't know much about working on power lines but I wouldn't reccomend it.
I think that these used to be made in northern Canada, where it gets mighty freezing, but alas, EVERYTHING is now made in china, so that would be my guess now. Makes me shake my head everytime I think about it.
Aside from that, these boots are great and your feet will never get cold, at least mine don't but they're the older kind still made up north. Love old school gear........

I bought these boots since a pair of boots with 600 gram Thinsulate Ultra insulation were not keeping my toes sufficiently warm. I tend to be outdoors for activities such as shopping, snow removal, and other similar activities. There is no comparison in my view - these boots are far warmer. They ought to be since Baffin rates them for -148 degrees F or -100 degrees C.

These boots are outstanding. They slip on and off easily. They are sized well - I wear with a light to medium sock. Even though they are medium-width the inner boot adapts to my narrow foot well. The two-buckle fastening system makes for very easy buckling, unbuckling, and adjustment. Pants legs easily fit inside the boot. The soles have a deep tread that provide very good traction. You can drive in them if you're careful despite their width. You do need to exercise some caution to avoid pressing both the brake and accelerator pedals but it is readily done if cautious.

I only have one regret - that I didn't find them sooner.

these are the best winter boots ever! this is my son's 3rd or 4th year using these boots. He is outside 8 hrs a day x 40 hrs a week & his feet never get cold or wet in upstate New York's frigid winters. They are expensive & he gets 2 pr every year as he is constantly in motion outside, but they are well worth it.