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　　Outdoor sleeping bags are a common sleeping tool, used by light travelers as an alternative to tents, and by some as a backup in inclement weather. The usage of the outdoor sleeping bag is very simple, you can warm up the right amount before going to bed, and then wear the right amount of clothes to use. Before the sleeping bag is used, there is still maintenance work to be done. After sleeping, it should be kept air-dried and stored well. Reasonable use of sleeping bags, but also pay attention to temperature, moisture and other issues.

　　How to use outdoor sleeping bag

　　1. Warm up before going to bed

　　The human body is the heat source of the sleeping bag, such as doing a short warm-up exercise or drinking a cup of hot drink before going to bed, will slightly increase the body temperature and help shorten the warming time of the sleeping bag. Our bodies will only be more comfortable at night when we store enough heat.

　　2. Dress appropriately

　　Some softer clothes can also be used as thick pajamas. Put the unused clothes in a long stick shape and put them on the side of the body to increase the thickness between the sleeping bag and the tent and close the gap between the person and the sleeping bag. Full filling reduces the rate of temperature loss and enhances the warmth retention of the sleeping bag. It should be noted that in a cold environment, do not wear a jacket into the sleeping bag. It is recommended to sleep in underwear only, which will help to quickly increase the temperature in the sleeping bag and the comfort of sleeping.

　　3. Sleeping bag maintenance before use

　　Please fully stretch the sleeping bag 1-2 days before outdoor sports, which will help to give full play to its thermal performance in the field, and then put the sleeping bag into the compression bag before departure. The moisture absorbed by sleeping bags mainly comes from the human body. Even in cold conditions, the human body still excretes at least a small cup of water during sleep. Insulation cotton will bond and lose elasticity after being exposed to moisture, and the insulation capacity will decrease. If the sleeping bag is used continuously for many days, it can be dried in the sun. Washing the sleeping bag frequently will also keep the insulation elastic.

　　4. Keep it dry

　　When camping in the wild, if time permits, the sleeping bag should be turned inside out in the morning, and placed on the top of the tent or in a dry, ventilated, and sunny environment, which will help the sleeping bag to dry, but avoid strong sunlight during the day.

　　5. Learn to store

　　When storing, you can roll up the sleeping bag once to squeeze out most of the air. Then spread out the sleeping bag, and place the sleeping bag irregularly into the compression bag from the tail. It is not recommended to put it into the compression bag by curling, because long-term regular curling will accelerate the aging of the sleeping bag fabric due to uneven force.

　　What common sense should you know about using sleeping bags

　　1. Pay attention to the use temperature

　　Any sleeping bag has a suitable temperature range for use, and different sleeping bags have their own "temperature scale". The general temperature scale is composed of three data, a low temperature refers to the low temperature used by the sleeping bag, below this temperature is dangerous for the user. There is also a comfort temperature, which refers to the ideal temperature for the sleeping bag to be used comfortably. The other is high temperature, which refers to the upper limit of the temperature range. Above this temperature, the user will be unbearably hot. This temperature is only for reference, and it will vary from person to person and from environment to environment. Generally speaking, sleeping bags made in Europe and America are not suitable for Asians in terms of temperature scale, because Europeans are higher in cold resistance than Asians, so we should pay special attention when choosing.

　　2. Pay attention to moisture-proof

　　Although the fabric of the sleeping bag has a certain waterproof or water-repellent function, if the weather is wet on the way, please seal the sleeping bag with a plastic bag to prevent humid air from entering the sleeping bag and reduce the warmth retention. When camping in the wild, using a moisture-proof pad can effectively separate the sleeping bag from the cold and wet ground and prevent the sleeping bag from getting damp.