I have been thinking of a new sleeping system, and something popped into my mind. Instead of using a sleeping bag, what about a lightweight down quilt/blanket. I did some quick research, and all I uncovered was a company called Nunatak http://www.nunatakusa.com/site07/arc_products/arc_expedition.htm. But all these guys seem to offer is a kind of semi open sleeping bag, not really what I am after. I know I could use a sleeping bag that unzips all the way past the feet, but I was just wondering if anyone knew/uses the kind of thing I'm thinking of? Or have I come up with a new invention?

Any help would be much appreciated as always,
Zane
