I just discovered that womens' fleece lined leggings, available at the Goodwill for $5.99 make great long johns (janes?). Weight about the same as the expensive ones, just as warm or warmer, all synthetic, etc.

As a bonus, I'm getting more in touch with my feminine side.

On the down side, if I ever do a through-hike, I'll probably be saddled with a trail name like "Ladypants."
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Always remember that you are absolutely unique, just like everybody else. -Margaret Mead