US Patent 9080345 Bivouac shelter

A bivouac shelter for residing outdoors, including a basis unit that forms a tunnel-like or sack-like body receiving space with an access opening for a person. The bivouac shelter includes a closure unit, by way of which the body receiving space is closable in a thermally insulating and airtight manner. The closure unit moreover includes a connection body that can be assembled transversely over the access opening and that is connectable to the basis unit in a thermally insulating manner. The closure unit moreover includes a hood attached onto the connection body for receipt of a head of a person lying with the body in the body receiving space. The basis unit can also include a foot-side terminating element.