I'm wondering if this stuff might be more useable as a mid-layer rather than base layer. I like baselayers that wick moisture, and mid-layers that insulate. YMMV, of course!

Unfortunately the site doesn't say anything about the fabric or insulation or how much this stuff weighs. Considering how much we have to pay for Montbell Thermawrap, this might be a great substitute, if it isn't too heavy and doesn't contain cotton.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey