I haven't taken them to the mountains yet, but they are so comfortable and warm. The only complaint I have is that the treads are very shallow/not very rugged. Definitely more of a fashion statement and less of a true mountaineering/winter trail boot, but I think people who are buying these already know that.
It's rare that I can any stylish shoes other than sneakers in mu size, but you guys have some & they came super fast. I am definitely a fan now & want all the colors
I bought these for my husband. He's not easily impressed but loves these boots. He said they are very warm, which I expected, but also amazingly light. A new favorite!