These are perfect. A big improvement over the old-fashioned traditional, cotton, waffle patterned long johns.
They don't lose their shape and the fit is skin-tight and comfortable.
They are warm an not bulky. I own 5 pairs .
Just perfect.

Loved the first set I bought so I got a second. Mailmen get cold. These help. And they're nice and long for my lanky 6'2" frame.

They are comfortable and warm. They‘ve made all the difference in the world since I wear dress pants, and split time outside.

Definitely recommend. Especially for harsh cold weathers. Had to get myself more pairs just cause' they're that good.

The small is a really great fit on me, but I'm a pretty slim 5'7'' guy. Doesn't leave a ton of room for bigger legs (or butts) so if you workout a ton or are generally more stocky, definitely go with a size up. But for me, they are fantastic. I never bought any sort of thermal underwear because I honestly thought they were super lame and only for dads and old people. But I'm now 31 and I freeze my butt of walking to and from my grad school campus (we're in MA, so... brrr). Guess I'm getting older but I can't wait to use these more often to keep my legs nice and toasty warm this winter.