Patent ID: 7386898

Claim:
A sleeping bag comprising: an inner shell; an outer shell, said outer shell being made of a waterproof material and having an inner surface and an outer surface; a plurality of dividing walls attached separately to said inner shell and said inner surface of said outer shell; said inner shell, said outer shell, and said plurality of dividing walls defining a plurality of insulating chambers; a fusion at each said plurality of dividing wall's interface with said inner surface of said outer shell, said fusion creating no substantial diminution of said outer shell's waterproof property and no breach of said outer shell's continuity; a sleeping compartment defined by a folding of a plurality of insulating chambers, whereby sides of said sleeping compartment are partially joined by one of a temporary attachment, a permanent attachment, and an adjustable attachment; wherein: said temporary attachment includes at least one of: a waterproof zipper, a zipper with a waterproof outer flap, and a waterproof outer flap.