I love these boots, they aren't too warm on my feet, but I've worn them in -40F and didn't get even a little cold. I only have two comments,
1. They can be snug, but that's what they're supposed to do to keep your feet warm
2. They aren't the best on ice. I've slipped a couple of times, but since they never stated they were anti slip I can't knock them points, just something to consider though.

Otherwise these boots are crazy comfortable and warm for long periods of time, and the quality is unrivaled!

These boots are rated for polar use and they come as advertised. I've been ice fishing with them a half dozen times since receiving them and have never had cold toes, which I had with my Sorels since the day I purchased them. Bulky as expected, but very comfortable. Well worth the money if you enjoy the outdoors in snow regions.

I got these just in time to wear in -10 degree temperatures with a -20 wind chill and was able to sit for three hours without my feet getting cool let alone cold. I have owned several extreme cold weather boots(Rocky, Sorel, and Cabela's) and these are easily the warmest I have worn. I wear a size 11 to 11 1/2 shoe and bought a 13. Glad I did. The boot fits perfect with a extra-heavy(Smartwool or Filson ) wool sock. Not tight, enough room move my toes inside the boot freely, but not enough room to feel sloppy while walking. I was looking for a pair of boots to crow hunt or still/stand hunting in freezing or sub zero temperatures where I am doing little to no moving and am quite happy with this purchase. I had to put sno-seal on the leather of the boot as the literature that came with the boot stated "water resistant leather". The rubber bottoms of the boots are, of course, waterproof. Not a deal breaker for me but if you need or have to have a boot with a waterproof liner like Gore-Tex this is not it. It's also not a boot if you plan on walking a lot. It's fairly light and I was amazed at how easy it was to walk around for a pac boot but it would be too warm to walk around all day/long distances without sweating. But lets face it if your looking for a pac boot your looking at it for warmth not mobility.

I have had Sorrell's since I was 18 (am now 63) and these will be the last snow boot I will ever own!

I bought these for my son. He is an outdoor Photographer here in Alaska. He frequently is above the Arctic Circle Aurora Chasing. And, looking for wild life to photograph. He says, even at negative 50 wearing no socks in the boots. His feet and legs, never feel the cold. I have used Baffin Arctic footwear since the early 1980's. And, I feel the same about the product. Baffin makes great Survival Gear.