This head tent is perfect for those times when just your head goes camping and your body stays home. This could also be useful if you like to sleep with your head out the window, as nobody does. Actually the manufacturer notes that this is intended for indoor use, as a convenient way to enjoy a nap. They also add that the tent has a special coating that keeps cold air out, and that you should consider placing a wet towel inside to keep you properly hydrated. It also has a pocket to keep “your phone free of moisture” which I guess would come from that wet towel.