I currently have two decent 25-30 degree bags that I like. However, in the winter I may need something to keep me warm down to 15 degrees.
I'm thinking of purchasing a 1 pound bag like the Marmot pounder to use as a quilt in conjunction with my 30 degree Sierra Laser bag.
Is this a good idea? Some of these bag "inserts" weigh almost a pound anyway, but I just don't know if putting a 40 degree bag over me will surpass what an insert will do.