For cool weather backpacking, I use a Western Mountaineering "Antelope" rated at 5°F. It has goose down insulation and weighs about 2#. Mine is the older version w/o Gortex. I think the newer version with Gortex weighs a little more.

Don't forget that your mattress is as important as your sleeping bag. I use a Thermarest "NeoAir", large, rectangular.

I wear a stocking cap to bed and if it gets cold I put on a puffer jacket also.

KC


Wind in my hair, Sun on my face, I gazed at the wide open spaces, And I was at home.