Layering Like an Onion The secret to staying warm in extreme cold is all about layers. Think of your clothing as an onion; multiple layers trap heat more effectively than one thick layer. Start with a ...

Freel’s use-case (weeks spent camping and hunting in the unforgiving conditions of backcountry Alaska) might be extreme. Still ... baffles shows the potential for cold spots that exists in many down ...

R is a measure of insulation, which is important because the ground is really cold, and it will steal your body heat if given the chance. High R value pads are like cold-weather sleeping bags. Low R ...