A sleeping bag is a lightweight insulated quilt that is used to cover a person while sleeping. This bag consists of a zipper that forms a tube to cover up a person. These bags are mostly used while camping, hiking, and climbing. This bag provides thermal insulation and keeps the body warm by its synthetics. These bags are water-resistant and the lower side of this bag provides cushioning. Sleeping bags are different for summer and winter because it is important to provide comfort to the person using this bag.
There are multiple materials used in a sleeping bag according to the requirements of people. There are two types of filling done in the sleeping bags that are natural fill and synthetic fill. The synthetic filling cost more than natural filling and it does not absorb water. The synthetic fill keeps the bag dry from the downside that prevents the person from hypothermia. Some of these bags contain water-resistant shells for using in damper situations. The main issue with this bag is that it consumes more space and has a heavyweight that creates problems for the person while not in use. The synthetic filling costs high but provides extreme safety to the person in random weather conditions. The durability of these bags is also higher in comparison to the natural fill sleeping bags.
Cotton and wool are also being used in sleeping bags for providing Cheap Cost Sleeping Bags. Cotton and wool provide thermal insulation but they consume water, so the sleeping bags are packed very well with plastic covers to keep the sleeping bags dry. After getting wet, cotton does not provide thermal insulation that is why the profession hikers do not use these sleeping bags. In a sleeping bag, there are four types of temperatures:
- Upper Limit
It is the maximum temperature at which adult men can sleep comfortably without getting sweat.
- Comfort Rating
This temperature range is the limit where an adult woman can sleep comfortably.
- Lower Limit
It is the minimum temperature to provide a normal sleep to an adult man.
- Extreme Rating
This can be termed as a survival rating for an adult man and this is only used for the professional climbers or hikers, not for general use.