I purchased the Terramar Thermasilk pants,shirt and socks for my husband and he loved them. Really comfortable while outside in the snow - skiing, on the snowmobile, etc. Thin enough to fit under a ski bib, shirt and ski jacket to keep warm without adding extra bulk. I was a bit concerned that they were so thin they wouldn't wash well, but I was wrong. I threw them in the gentle cycle and hung them up to dry without issue. Sizing chart right on the money. These are worth a few extra dollars!