Fit is off. I am a medium in everything (including other Sugoi tights) and the medium in these was no where close to fitting, so I went up to a large. Large fit at the waste but are a too long (I'm 5'10) and I have to spend a few minutes realigning them before heading out to run. They have taken a few runs to get used to but are good now. Nice and warm on -18 mornings.