This is my second pair of these leggings. I have worn them for everything from skiing in the Northeast to backpacking to rock climbing. They're nice and warm for every activity I've tried except for indoor running. In that case they get a little bit too hot. In terms of quality, these are great. I bought a second pair for aesthetic reasons, as rock climbing had created pills on the seams. Now I've set aside the old pair as my rock climbing leggings and the new pair as the one I live in.