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Sleeping bag: Difference between revisions
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The second major type of sleeping bag, sometimes called a '''[[mummy]] bag''' because of its shape, is different in a number of important ways. | The second major type of sleeping bag, sometimes called a '''[[mummy]] bag''' because of its shape, is different in a number of important ways. | ||
* It tapers from the head end to the foot end, reducing its volume and [[surface area]], and improving its overall heat retention properties. Some bags are designed specially to accommodate women's body shapes. | * It tapers from the head end to the foot end, reducing its volume and [[surface area]], and improving its overall heat retention properties. Some bags are designed specially to accommodate women's body shapes. | ||
* It usually does not unzip all the way to the feet. The zipper is a weak point in any sleeping bag's insulating qualities. Together with the tapered shape, this design feature helps protect the | * It usually does not unzip all the way to the feet. The zipper is a weak point in any sleeping bag's insulating qualities. Together with the tapered shape, this design feature helps protect the feet, which are more vulnerable to heat loss than other parts of the body. | ||
* It usually has a drawstring at the head end, to help prevent the escape of warm air. | * It usually has a drawstring at the head end, to help prevent the escape of warm air. | ||
* A mummy bag often cannot be rolled like a rectangular bag. Instead, it is simply stuffed into a [[stuff sack]] or [[compression sack]]. | * A mummy bag often cannot be rolled like a rectangular bag. Instead, it is simply stuffed into a [[stuff sack]] or [[compression sack]]. | ||