In 1917 the zipper was developed and, of course, these made for a terrific seal for the rectangular sleeping bags allowing an individuals body warmth to remain trapped longer consequently keeping them warmer on those cold winter season evenings. Basically the term resting bag essentially suggests a safety bag for someone to rest in.
Primarily the term resting bag basically implies a protective bag for somebody to sleep in. A wet down sleeping bag is very hard to dry out as well as is considered even worse than having no resting bag at all. One more kind of resting bag is the mommy bag. Unless you are intending a trip to an extremely chilly climate and also resting outdoors after that you will most likely be better with rectangle-shaped sleeping bags over a mommy style bag. These bags have a particular usage and they are really certain, extremely cold climate, mommy sleeping bag.
Semi-Rectangular: I call this the cross. This backpacking bag is rectangle-shaped ahead and afterwards slenders along towards the feet. With this type, you obtain added space, but not as much weight as a true rectangular resting bag. For those who are claustrophobic, like me; we can reach sleep a little better inside a bag with added room in it and still have some benefit from the form.