I think I have found my brand of wool. These leggings are the BEST. I am 4"11 and approx 129 lbs. I ordered the medium however I could have gotten away with the small. They are pretty forgiving and the waist band does not roll over with activity, it stays in place, imagine that! They don't itch are soft, yet have shape and structure so they look nice and sporty. These are so much better than Smartwool or REI (sorry, not sorry) and for the price point they are spot on! . I have not been cold in the sub zero temps here in Wisconsin. I have worn them snowmobiling, skiing and outside walking the dog and to work. If I could wear them everyday I would! They don't pill, hold up well in the wash and are really warm. I have since ordered the Avery legging and the heavy weight base layer top. I can't wait until they arrive. Get them...you won't be disappointed.