I bought these shoes and went on an ice fishing trip a few days later.  I wore these shoes the first day fishing and we were just in a pop-up ice house so feet were on ice all day, thinking they state -20degrees these are still comfortable.  I was wearing wool socks and about every 2 hours I would have to go start the truck because my feet froze.  They are NOT comfortable on ice anyways, and it was a very nice day of 20-25 degrees outside.  Needless to say I wore my boots the rest of the days we went fishing.  These are not made for cold weather.  They are easy to slip on and off, but I will not be buying another pair.