Novel sleeping bag

Abstract

A multi-use sleeping bag is disclosed. In one aspect of the invention, the sleeping bag includes a bottom bag portion of reduced insulation relative to the other portions of the bag. In another aspect of the invention, the sleeping bag includes an intermediate layer disposed within the bag such as to create two sleep chambers, one above the intermediate layer and one below the intermediate layer. In another aspect of the invention, the sleeping bag includes an intermediate layer disposed within the bag, the intermediate layer including a hood portion with a face opening and the bag including a hood portion with multiple face openings, and the intermediate layer and the bag each including one or more baffles that are selectively positionable to cover the face openings.

The invention claimed is: 
     
         1 . A sleeping bag comprising:
 (a) an outer layer having a top portion, a bottom portion, two side portions, a head portion, and a foot portion, wherein the outer layer is shaped to define a chamber bounded by the top portion, bottom portion, side portions, and foot portion; and   (b) an intermediate layer disposed in the chamber of the outer layer between the top portion and bottom portion of the outer layer and fastened to a surface of the outer layer such that the intermediate layer subdivides the chamber of the outer layer.   
     
     
         2 . The sleeping bag of  claim 1  further comprising a plurality of straps attached to the bottom portion of the outer layer outside the chamber of the outer layer. 
     
     
         3 . The sleeping bag of  claim 2  wherein at least two of the plurality of straps are oriented to cross each other. 
     
     
         4 . The sleeping bag of  claim 1  further comprising:
 (a) at least two outer-layer baffles attached to the outer layer; and 
 (b) an intermediate-layer baffle attached to the intermediate layer; 
 (c) wherein the head portion of the outer layer comprises a hood having at least two face openings; 
 (d) wherein the intermediate layer includes a hood having at least one face opening that corresponds to one of the head-portion-hood's face openings; 
 (e) wherein the outer-layer baffles are configured to selectively cover the head-portion-hood's face openings; and 
 (f) wherein the intermediate-layer baffle is configured to selectively cover at least one face opening of the intermediate-layer hood. 
 
     
     
         5 . The sleeping bag of  claim 1  wherein the head portion of the outer layer includes a head opening and a hood configured to selectively overlap the head opening. 
     
     
         6 . The sleeping bag of  claim 1  further comprising:
 (a) a first foot opening in the outer layer; 
 (b) a second foot opening in the intermediate layer; 
 (c) a first foot-opening baffle attached to the outer layer, wherein the first foot-opening baffle is configured to selectively cover the first foot opening; and 
 (d) a second foot-opening baffle attached to the intermediate layer, wherein the second foot-opening baffle is configured to selectively cover the second foot opening.