I really do love these pants. I think they will be great under my snowpants for skiing, which is what I actually bought them for anyway. I tried them on and they were so comfortable I wore them a few times already for running around. They are a great underlayer, but if it is really cold out, they will not keep you warm alone. I tried to wear them to take the dog for a walk/run this week and it was too cold to wear them alone, under pants they would be awesome, which is what they are intended for I'm sure. Overall,I would recommend, they are super comfy!