Abstract: A companion sleeping bag (A) having an enclosure (1) formed of a shell (6) having opposing folds (6A, 6B) joined together at least along a head portion (12) and forming an interior sleeping space (11) defined by an interior liner (8) therebetween. One of the opposing folds (6A, 6B) is formed with an opening (5) therethrough into the interior space (11) with a collar (2) is positioned around the opening (5). A mating means (10), such as a zipper, is coupled to the opposing folds (6A, 6B) of the shell (6) adjacent to one or both sides (15, 16) of the enclosure (1). The mating means (10) is securable between the opposing folds (6A, 6B). The mating means (10) is further matable to a cooperating mating portion (D) of a separate conventional sleeping bag (B) or another for joining the companion sleeping bag (A) thereto.

Abstract: A companion sleeping bag (A) having an enclosure (1) formed of a shell (6) having opposing folds (6A, 6B) joined together at least along a head portion (12) and forming an interior sleeping space (11) defined by an interior liner (8) therebetween. One of the opposing folds (6A, 6B) is formed with an opening (5) therethrough into the interior space (11) with a collar (2) is positioned around the opening (5). A mating means (10), such as a zipper, is coupled to the opposing folds (6A, 6B) of the shell (6) adjacent to one or both sides (15, 16) of the enclosure (1). The mating means (10) is securable between the opposing folds (6A, 6B). The mating means (10) is further matable to a cooperating mating portion (D) of a separate conventional sleeping bag (B) or another for joining the companion sleeping bag (A) thereto.