Special Forces have for years used this type of bag. The advantage of using a bashas compared to tents are faster and easy set-up,and are very lightweight and small pack size Bashas are used in emergency or if a tent maybe too heavy to carry around. These are usually strung between a couple of poles or trees and a hammock can be used underneath to keep you dry. These are used where there is no room for a tent or lightweight trekking is requiered. Sometimes users carry very small poles to prop up the basha. This is useful in places where there is not trees