I was at the fabric store looking for material for a separate project, and I came across some INCREDIBLY light netting.
Admittedly, the holes in the netting are larger than in no-seeum netting, but not by lots. And while the fabric doesn't seem to be quite as robust, I have not been able to tear it by pulling on it with my hands.
This netting is MUCH lighter than no-seeum (about 1/4th the weight):
mystery netting: .00025 oz/sq.in.
no-seeum netting: .0011 oz/sq.in.
I'm very tempted to try to use it for the baffling in my quilt that I'm going to be making…
Has anyone else tried to go with something lighter weight than no-seeum for the baffling in a sleeping bag or quilt? If so, were you happy with the results?

