One of my main complaints with cheap thermals besides the fact that they never really kept me warm was that they didn't fit!
Most cheap thermals are constricting around the waist and around my calves. I say calves because I never found a pair of thermals that would actually come down to my ankles! The Minus 33 wool thermals are long and do not shrink when washed. (I am 5'8" tall, a bit taller than an average American woman.)
The waistband is comfortable and sits at the waist, not up to your bosom as so many of the cheap thermals do. I do wish that Minus 33 would come out with a below the waist thermal. It would be even more comfortable and wouldn't peek out above my jeans. But the at the waist models that are featured here are not particularly uncomfortable. They just take some time to get used to if you are not accustomed to wearing anything up at your natural waist.
The bottom of the legs are not tightly banded, so no matter where they fall on you, they do not constrict. Even when I wear thick wool socks, the thermals do not bind my ankles or calves.
Put simply, these thermals fit well and are comfortable. When I pull out a pair from my dresser, I never think, "Ugh, I have to wear those tight/short/uncomfortable thermals." Instead I think, "I'm so thankful to have my wool long johns!"