T_Inman:

I use a Western Mountaineering "Alpinlite" for summer backpacking. It weighs 2# and is rated at 20°F.
I use a Western Mountaineering "Antelope" for winter backpacking. It's rated at 5°F and weighs about 2 1/2#.

Both compress into a package small enough to fit inside a medium size stuff sack, which you can easily go into the bottom pouch of your backpack.

Both are pricey. You get what you pay for.

KC



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