It's a coat, backpack and tent all-in-one. During warm weather, the coat can be folded and strapped around the wearer as a backpack for easy transport. When it's time to set up camp, the interior lining can be stretched out and pegged.
Sometimes the biggest hassle with camping is setting up the tent--figuring out which rod goes in what sleeve and all that fuss. If you have a tent with multiple rooms, you may as well get out the Advil for your inevitable headache. The Camping Doughnut