If only I could still get the poly pro duofold two layer...but these were nice. Flat lock seams and great fit.  I probably could use a size up as they were a little snug at first, but after having them on a bit they felt fine.  I am long waisted and these fit great on me, for those that prefer the low-rider feel these may not work as well.  I wear these mostly for indoor, not extreme cold.