I got these to wear under snow pants for my outdoor job, where I ski and snowshoe on a daily basis in the winter. I need a good set of merino base layer pants, and I am happy with these overall. Haven't tested them in the field yet, but I have no doubts they'll do a great job. My only complaint is just a personal preference issue. The sizing is fine, but the elastic fits a little too high on my waist. Almost up to my belly button. I'm concerned this is a wedgie in the making while I cross country ski. Maybe not. But overall I'm happy with these.