How to choose an outdoor sleeping bag

To choose a sleeping bag, you first need to look at the temperature scale, pay attention to the night temperature of the place you go, and choose the temperature scale corresponding to the temperature. The second is the material. The material is down, cotton, and fleece. Generally, you can choose a down sleeping bag if the temperature scale is below 0 degrees. The down sleeping bag is relatively light, and the compressed volume is small and easy to carry. Cotton sleeping bags are heavier and bulky after storage. Fleece sleeping bags are relatively thin and generally suitable for higher temperature environments. In addition, it is necessary to prepare a sleeping bag lining, which is used to cover the sleeping bag, which can reduce the degree of contamination of the sleeping bag. Finally, choose the sleeping bag style. The styles include envelope style, mummy style, and three-dimensional style. Most of them are low-temperature sleeping bags with good warmth retention.