Not all they are cracked up to be
I heard that these boots were the warmest, toughest boots out there. After being worn for a month working on the mountain, I'm not terribly impressed. My feet are wet (from sweat) within a couple of hours, and I'm not a sweaty person, and the liners are already falling apart. You have to take the liner in and out every time you put the boots on/off. I think that they used to be made better but that the quality is possibly slipping. Liners are synthetic and don't breathe, hence the constantly sweaty feet.