For those of you that have used or still use Duofold, have any of you used the Varitherm line? I was thinking about getting a set, but the only thing I'm wondering about is that it's supposely for high activity use. It seems like the only Duofold line with a mock zip. Any info would be appreciated.

OK you lost me. I've never heard of using this stuff for deer hunting?

what is it? maybe that would help me

It's thermal underwear for different occasions put out by Champion. They have quite a few different lines including one for specifically hunting. Only problem is the hunting one doesn't have a mock zip. www.duofold.com I'm pretty sure a few people from here use it as I recall hearing about it here several times over the years. They also have a polypro line as well and their prices are reasonable. You can actually get them cheaper on sites like www.campmor.com and others.