Sleeping bag
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A sleeping bag is an insulated covering for a person, essentially a lightweight quilt that can be closed with a zipper or similar means to form a tube, which functions as lightweight, portable bedding
A tourist in a sleeping bag
A three-person buffalo sleeping bag used during Arctic exploration circa 1880
Russian sleeping bag used in space station Mir and International Space Station
A mummy bag, so named because it has an insulated hood which keeps the head warm. A foam sleeping pad can be seen underneath the sleeping bag.
Bivouac shelter
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A bivouac shelter or bivvy is any of a variety of improvised camp site or shelter that is usually of a temporary nature, used especially by soldiers or people engaged in backpacking, bikepacking, scou
Sleeping bag
…insulated sleeping bags. One subcategory of cold-weather sleeping bags, the mummy bag, is so named because it has an insulated hood for the head. A bivouac sack (bivy) is a waterproof cover for a sleeping bag that may be used in place of a tent by minimalist, experienced hikers. A bivy bag may also be carried…
A bivouac sack (in red) covering a man within a sleeping bag in Benediktenwand, Germany