Sleeping bag

Abstract

A sleeping hag is provided. The sleeping hag includes an elongate shell defining an inner volume sized and shaped to receive a user therein, the shell having a head portion, a foot portion, a middle portion extending longitudinally between the head and foot portions, an overlying portion adapted to overlie the user during use, and an underlying portion adapted to underlie the user during use, wherein the shell is free from zippers. The sleeping bag further includes a hood being located in the head portion of the shell, the hood including an opening such that the overlying portion of the shell adjacent the opening is spaced from the underlying portion of the shell when the sleeping bag is laid out for use.

What is claimed is: 
     
         1 . A sleeping bag comprising:
 an elongate shell defining an inner volume sized and shaped to receive a user therein, the shell having a head portion, a foot portion, a middle portion extending longitudinally between the head and foot portions, an overlying portion adapted to overlie the user during use, and an underlying portion adapted to underlie the user during use, wherein the shell is free from zippers; and   a hood being located in the head portion of the shell the hood including an opening such that the overlying portion of the shell adjacent the opening is spaced from the underlying portion of the shell when the sleeping bag is laid out for use.   
     
     
         2 . The sleeping hag as set forth in  claim 1 , wherein the opening in the hood is at least one of a catenary opening, an oval opening, an ovate opening, an elliptical opening and a circular opening. 
     
     
         3 . The sleeping hag as set forth in claim I wherein the opening in the hood provides a user ingress to and egress from the inner volume of the shell. 
     
     
         4 . The sleeping bag as set forth in claim I wherein the shell further comprises a head end panel, a foot end panel, and a pair of spaced side panels extending longitudinally between the head end panel and the foot end panel. 
     
     
         5 . The sleeping hag as set forth in  claim 4  wherein the opening in the head portion of the shell is spaced from each of the side panels and the head end panel. 
     
     
         6 . A sleeping bag comprising:
 an elongate shell defining an inner volume sized and shaped to receive a user therein, the shell having an overlying portion adapted to overlie the user during use, an underlying portion adapted to underlie the user during use: and   an elongated opening disposed on the overlying portion of the shell, the elongated opening comprises an upper edge portion, a lower edge portion, and a pair of side edge portions that are longer than the upper edge portion and the lower edge portion, the elongated opening being configured to provide a user ingress to and egress from the inner volume of the sleeping bag, the elongated opening having a width less than a width of the shell.   
     
     
         7 . The sleeping bag as set forth in  claim 6  wherein the elongated opening is at least one of an oval opening, an ovate opening, an elliptical opening, a circular opening, a partially rounded opening, a non-rounded opening, a pentagon opening, a hexagon opening, or an octagon opening. 
     
     
         8 . The sleeping bag as set forth in  claim 6  wherein the shell further comprises a head end panel, a foot end panel, and a pair of spaced side panels extending longitudinally between the head end panel and the foot end panel, the elongated opening being spaced from the foot end panel and each of the side panels. 
     
     
         9 . The sleeping bag as set forth in claim $ wherein the elongated opening is spaced from about 7 inches to about 12 inches from each of the side panels. 
     
     
         10 . The sleeping bag as set forth in  claim 8  wherein the elongated opening is spaced from the head end panel. 
     
     
         11 . The sleeping bag as set forth in  claim 8  wherein the elongated opening is spaced from about 4 inches to about 13 inches from the head end panel. 
     
     
         12 . The sleeping bag as set forth in  claim 6  wherein the head portion includes a support member disposed between the opening and the head end panel and extending from one of the side panels to the other side panel. such that an edge of the support member is free from contacting the opening.