Which Winter Base Layers Should We Test?

After sleeping pads, I think our next comparison test is going to be winter base layers. Which ones do you want to see tested? What do you want to know about them?

DISCUSSION

crmsnghst
crmsnghst

Uniqlo Heat Tech vs...well everything else. Is "cheap" as good as the tryed and true (Silk, Merino, Capalene)?