Camping swags are mainly used by people who do not wish to carry a tent and sleeping bag separately. It acts as both a tent with a proper framework and a sleeping bag. It allows you to carry less stuff while going camping, and it makes packing easier. And since you'd be carrying fewer larger essentials, then you'd be able to carry less important stuff, such as a book or more hand soap/ toilet paper, ensuring that your time out camping will be a memorable one.