<p>The sleeping bag (1) has a compartment (13) that may receive an additional mat (2). The compartment can be formed by a lower wall part covering basically the entire surface of the underneath of the sleeping bag. The edges of the lower wall part can be stitched along the lower side. The lower wall part can be connected along three sides and the insert opening for the mat can be provided along one of the long sides, along the bottom or along the top. The insert opening is closable by slide or touch and close fasteners</p>
