I just finished 5 days using it some of them. I have 4 different kinds of underwear and usually wear 2 at a time. The underarmer is wierd, very tight, but evenly all over so you don't get squeezed in anyone spot. As far as keeping you warm I suppose it could if you can stay dry enough before settling in. I couldn't. It would eventually dry out and I would be comfortable then. It is not what it claims, (end all) but just as good as some lesser underwear of the same type, ie moister wicking blah, blah, blah... I didn't pay retail for mine, around 35 a piece therefore the reason I tried it out. Glad I have it but most likley wont buy more. Frooze the last day wearing it, but with the help of chem warmers, my wool coat w/hood and my prey coming in for a cup of mojo, I'll most likley never remember the cold.

Would love some wool to try because being wet is not a draw back with that stuff. Have seen the JC stuff before but not interested in a mid wieght. Just didn' see what I wanted. I wear a wool coat after I get in stand on days I get cold.

I also tried different socks. My rubber boots have 1200 grns thinsulate. Feet sweat in these easily. The first day I wore some smart wool socks and liners. They got wet so I wore just the liners. Worked great. I tried it other days with mixed results. One day I just wore some new socks made out of alpaca wool. Worked very well. Will get more of those and liners. Would love some underwear made out of it.

I meet a women at a festival who makes wool garments and talked to her about socks. She could read my mind. I'll be trying hers out some time. She came up with her own form of pack for boots. She makes 3 different sizes of socks for the job. $25 a piece, but I think the more you get she will give a better price. No mid wieght stuff. Didn't ask about underwear.

Here's her contact info

Nancy Wild
2400 Wolf Creek
Adrian, Mich 49221
(517) 265-9145