The boots are great, but they do have 1 draw back....heavy!
They are constructed with heat retention of the utmost concern.
If your boots are rated low enough for the temperature your in, then
one of the most common reasons your feet get cold is because your insulation gets wet.
Now, your insulation gets wet by one of 2 ways.....water actually gets in, or because of sweat. ALL insulation losses efficiency when it becomes wet. Some a lot more than others, but they all lose some.
Now, the mickey mouse boots has a layer of wool insulation sandwiched in between 2 layers of rubber. There is no way for the insulation to get wet unless you happen to puncture the boot. If the insulation can't get wet from either sweat or water entry, then your feet will stay warm to about the rated temperature.
If you happen to go over the top of the boot in water, they then can act like a wet suit boot that SCUBA divers wear. The warmth of your feet will actually heat the water up. Thats not to say your feet wont be cold because they will, but it wont be as important to get out of your boots and into some dry socks and liners.
You can kind of do the same with a pair of Sorels. What you need is a liner sock, like Thinsulate, a VBL sock (Vaper Barrier Liner) and a wool sock over that. The VBL wont allow sweat to pass into your insulation, but if you happen to dunk your boot over the top in water, your in trouble! Your insulation is now wet. I used to wear VBL when I backpacked in the winter.
A MAJOR drawback of them is STINK!!! Your feet wallow in their sweat for hours! I never before stunk so bad! Better have good friends or else!
Mickey mouse boots are a great boot to have when you might find yourself in a situation where failure could mean disaster!
I wouldn't want to have to walk too far in them. They are really popular with ice fishermen and tree stand hunters. Just sitting around kind of stuff.
They are worth their money though...I mean for $50 with shipping you can have a great pair of low temperature boots.
Never know when you may need them either......