Is the dirty sleeping bag thin or thick?

In fact, the quality of buying some regular manufacturers is very good. The thinner the material, the better, and the higher the cost. Thin is suitable for business people or tourists, such as staying in hotels on business trips, sleeping in berths by train, etc. And there is a lot of luggage. Try to choose a thin sleeping bag that is dirty and does not take up space, which is convenient and comfortable.