labgrade
Member In Memoriam
My "rule of the field" is that you can always get colder. Even a -20 deg F bag can be comfortable by judicious venting/layering.
In Colorado, a down bag works very well - we have a very low humidity - YMMV in a more humid climate & may be best served with a synthetic filled bag.
With a basic load-out of underwear of a capilene (lightweight & expedition-weight), I can can expand the bag's "thermal-load" another 15-20 degrees. A lightweight down vest+, I can go a bit lower.
Insulate from the ground using a decent pad, use a Gore-Tex bivy sack to isolate from the weather (an extra shield does wonders) - a decent enough bag & you'll be all but set. Some extra "additions," based with some experience & you'll be all set for all but the worst anything M-Nature can throw at you.
Allowing yourself to be dry, warm & comfortable for a decent night's sleep makes for a wonderful next day - it's a big start.
In Colorado, a down bag works very well - we have a very low humidity - YMMV in a more humid climate & may be best served with a synthetic filled bag.
With a basic load-out of underwear of a capilene (lightweight & expedition-weight), I can can expand the bag's "thermal-load" another 15-20 degrees. A lightweight down vest+, I can go a bit lower.
Insulate from the ground using a decent pad, use a Gore-Tex bivy sack to isolate from the weather (an extra shield does wonders) - a decent enough bag & you'll be all but set. Some extra "additions," based with some experience & you'll be all set for all but the worst anything M-Nature can throw at you.
Allowing yourself to be dry, warm & comfortable for a decent night's sleep makes for a wonderful next day - it's a big start.