The temperature rating recorded on the sleeping bag has many levels, you will choose based on the temperature and the time you go camping. For example, if you camp at Glacier Nat’l Park in the winter, you should choose a sleeping bag with a temperature rating below 30F. to 40F is suitable. If you have a lot of money, you should buy a compact compression, very convenient to carry and does not take up much space. Buy type made of down material again, the weight is light. Some famous brands like The North Face, Marmot, Kelty, etc. always cost over $ 100 for an adult sleeping bag. If you don’t often go camping, a $ 30 Coleman sleeping bag at Walmart is the best choice.