What is the difference between a down sleeping bag and a cotton sleeping bag
1. The filling is different
The filling of the down sleeping bag is Duck down or goose down, duck down generally has a high down content of 85 to 90, and goose down has a down content of 90 to 95. Generally speaking, the higher the expansion degree of down, the better the thermal insulation performance of down, and the thermal insulation of goose down is slightly higher than that of duck down under the same conditions.
Cotton sleeping bags
 are filled with chemical fiber cotton. There are many types of cotton, and the quality is uneven. From ordinary spray cotton, to four-hole cotton, seven-hole cotton and nine-hole cotton, they are all available in the market. , Among them, there are more chemical fiber cotton products with seven holes or nine holes, which keep warm better.
2. Performance Different
The performance of cotton sleeping bags is similar, with the increase of use time, the thermal performance will gradually decrease until it can’t be used, but they have an advantage that down sleeping bags do not have, that is After getting wet, it can still retain some thermal properties, unlike down, once it gets wet, it will not keep warm at all or even have a negative effect.
Comparing the two fillings of down and chemical fiber, down has a higher degree of warmth, and it can achieve light weight under the same degree of warmth. Chemical fiber cotton has relatively low thermal insulation, large packaging volume and poor compressibility. Down is expensive, and chemical fiber cotton is cheap. When down is wet, it will lose almost all its thermal insulation ability, and it is not easy to dry. Therefore, in harsh mountaineering environments, materials with waterproof and breathable properties are often used as the outer material of down sleeping bags. Chemical fiber cotton has certain water repellency. It retains a certain amount of warmth after getting wet, and it dries quickly.
3. Different service life
Down products have a long service life and can be used for more than 10 years with good maintenance, while the life of chemical fiber cotton sleeping bags is only 3. 4 years. Down sleeping bags have high requirements on internal and external materials, and the lining material usually requires more than 200T, so the overall life is longer.
A cotton sleeping bag or a down sleeping bag is better
Both cotton sleeping bags and down sleeping bags can be used for outdoor camping. There is no absolute statement on which of the two is better. , or to judge according to the actual situation. The down sleeping bag has good thermal insulation effect, strong compressibility, easy to carry, suitable for use in cold winter, but the price is also high, once it gets wet, it will lose its warmth. Although the cotton sleeping bag has poor folding resistance and pressure resistance, its moisture resistance is better. Even in a humid environment, it can still have a certain degree of warmth, and it is easy to dry. It is suitable for use in areas with more rain.
Cotton sleeping bags are not easy to squeeze. Every time you squeeze and twist, it will cause countless cotton fibers to break or deform. These damaged cotton fibers can no longer be fluffy, which means that every time you compress Cotton sleeping bag, its thermal capacity will be irreparably lost, and the amount of loss depends on the quality of the fiber and the degree of compression. If there are too many damaged fibers, the cotton sleeping bag will collapse.
The down sleeping bag is easy to squeeze. Each down bud is composed of many down fibers. The down composed of protein has good elasticity, pressure resistance and folding resistance, and the bulkiness is not lost after multiple compressions. Therefore, as long as it is not a fake down sleeping bag, the service life is much better than that of a cotton sleeping bag.
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