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:
“Where are Elmer, Herman, Bert, Tom and Charley,
The weak of will, the strong of arm, the clown, the boozer, the
fighter?
All, all, are sleeping on the hill.”
—Edgar Lee Masters (1869–1950)
“Some critics are like chimneysweepers; they put out the fire below, and frighten the swallows from the nests above; they scrape a long time in the chimney, cover themselves with soot, and bring nothing away but a bag of cinders, and then sing out from the top of the house, as if they had built it.”
—Henry Wadsworth Longfellow (1807–1882)