A sleeping bag is a protective "bag" for a person to sleep in, essentially a blanket that can be closed with a zipper or similar means, and functions as a bed in situations where a bed is unavailable (e.g. when camping, hiking, hill walking or climbing). Its primary purpose is to provide warmth and thermal insulation. It also protects, to some extent, against wind chill, precipitation, and exposure to view, but a tent performs those functions better. The bottom surface also provides some cushioning, but a sleeping pad is usually used in addition for that purpose. A bivouac sack (bivy) is a waterproof cover for a sleeping bag that may be used in place of a tent for lightweight travelers or as a backup if inclement weather occurs.
Read more about Sleeping Bag: History, Design Types, Fill, Temperature Ratings, Indoor Sleeping Bags, Infant Use
Famous quotes containing the words sleeping and/or bag:
“I fear all we have done is to awaken a sleeping giant and fill him with a terrible resolve.”
—Larry Forrester, U.S. screenwriter, Hideo Oguni, and Ryuzo Kikushima. Richard Fleischer, Toshio Masuda, Kinji Fukasaku. Admiral Yamamoto (Soh Yamamura)
“Have you seen but a bright lily grow
Before rude hands have touch’d it?
Have you mark’d but the fall of the snow
Before the soil hath smutch’d it?
Have you felt the wool of the beaver,
Or swan’s down ever?
Or have smelt of the bud of the brier,
Or the nard in the fire?
Or have tasted the bag of the bee?
O so white, O so soft, O so sweet is she!”
—Ben Jonson (1572–1637)