Before sleeping bag of choose and buy, ask oneself such a few questions? What is the lowest temperature in my 

environment? Do I care about weight? How much am I going to spend? If you only want to use a sleeping bag above 

zero, opt for a cooler bag, such as a -3 or -5. If you have poor cold resistance, it is recommended that you also choose 

a sleeping bag with a lower temperature index. After all, it is much easier and safer for us to deal with warm than cold.

  When using a sleeping bag, be careful to keep it dry because it will be much less warm when wet, and down sleeping bags 

in particular will not keep you warm at all. So protect your backpack from water during heavy rain or water sports, or seal 

your sleeping bag with a water bag ahead of time. The sleeping bag should be dried in the sun or air as soon as possible 

when conditions permit. Damp down sleeping bags cannot be stored for a long time, or they will become moldy or even 

decayed.

  Whether it's down or synthetic, it's a good idea not to compress your sleeping bag and keep it loose when you're not 

using it for a long time. The purpose of this is to maintain the down and cotton nature and extend the life of the down 

sleeping bag, especially in the down sleeping bag storage bag (loose breathable cotton bag). Finally, use sleeping bags as 

personal hygiene items and avoid borrowing from each other.