And American-made in NC! Because I have a previously bought pair - now 3 years old - I bought another from Amazon.
Did NOT know that I could buy such things here!

The week before Xmas 2012 - I bought a Walls Brand quilted pair at Wal-Mart.
They had the UW mis-priced higher.. $14.96!
Then after 2 cold water washings - the waist band elastic went.

I went looking for other cold weather solutions.
The DUOFOLD Mid-weight long UW bottoms are far better made and feel like pajamas!
$6.96 plus shipping.
NOT for mountain traveling on foot but for 20 degree weather in Chicago - just right for outdoor walking and commuting to work.

Wash in COLD water and dry on DELICATE but pull them out after 20 minutes and finish by hang drying.

Stay warm, kids!