That's a good point, and a valid question. Two major reasons I see...it keeps the wind off my face and toes, and it keeps moisture off the TQ/UQ.
Keeping the wind off stops convection from stealing the heat from the TQ/UQ...that may balance out with the extra down, but certainly not on my face. My nose and toes are always a lot warmer when I use a sock (especially on windy nights).
When I was at Winnemucca
, the dry snow was coming under my tarp, floating up above me, and landing on my PeaPod. Then it was melting and wetting my down insulation. But if the sock gets damp, it's much easier to dry. It can also stop windblown rain, fog, etc. But that kind of moisture management depends on environmental conditions...have to balance it against condensation from my breath.
Also just gives some privacy.
“Republics are created by the virtue, public spirit, and intelligence of the citizens. They fall when the wise are banished from the public councils because they dare to be honest, and the profligate are rewarded because they flatter the people, in order to betray them.” ~Judge Joseph Story
- My site: http://www.tothewoods.net/
- Designer, Jeff's Gear Hammock / Pack Cover
IMPOSSIBLE JUST TAKES LONGER