i ordered 6 of these snow penguins and a few other patterns in medium but the waist was different in almost half of them; some were looser with a high rise and the other half where too tite, low rise and uncomfortable and fit like an xs and small. thats bad manufacturing. i only tried on 1 pair that fit comfy and assumed they would all fit the same. by the time tried the rest on my return window was long closeed so i wasted a lot of money. they are soft, thin but warm. order one size up or better yet not at all.