I’m 5’8 around 135 and got a size small and I think they fit perfect. Wore them snowshoeing and they kept me really warm and stayed up. Never has to pull them up once! Not very stretchy FYI but very warm.

These are a great everyday option in the winter, much more basic than some of my other thermal leggings--no fancy reflective details or zippers--and I like that. They're very warm and of course the pockets are great. They are VERY high-waisted; I don't mind but be warned. The thermal fabric isn't super stretchy, but they are still TTS for me. I'm always a S in leggings (135-140ish lbs) and the S fit me perfectly. Once on they do not budge.

I already owned the thermals in gray, and LOVE them for cold weather hiking in the northeast, so I wanted to get the black before they were out of stock for the season. I went with my usual medium, but these definitely have less stretch than other leggings, so YMMV. Please, Senita, more colors for these!! Would love a navy or dark green color for next year!

These are warm snd comfy and don’t end up covered in dog hair! I did sizeup to xxl based on reviews and am glad I did. They come up sooooo nice and high! Highly recommend!

These are great--love the pockets and the warmth! I can wear them for winter hiking and xc skiing--just what I need!