For those interested in kit, I’ve just come across a useful video on the Patagonia site. If you go here, and click on the video camera icon beneath the illustration of the pullover, you’ll get a short rundown on the testing and development of Capilene fabrics and garments. The discussion of balancing attributes is especially fascinating.
I have no financial interest in Patagonia—except to the extent that I frequently send them large chunks of money—but I do still have my original copy of the landmark 1972 Chouinard catalogue.