It is a waterproof and windproof 2-person tubular tent made of extra-thick tear- and puncture-resistant polyethylene material that blocks rain, wind, and snow. The interior is designed to be your shield from the elements, reflecting up to 90% of your body heat to keep you warm, dry and protected from the elements. Simply thread 20 feet of nylon-core paracord through both ends of the tubular tent and tie between two trees or a sturdy object 3 to 4 feet above the ground. Use rocks or gear to secure tent corners. We are also equipped with a whistle and a compass. The whistle can be used as a distress signal when you are in danger, and the compass can guide you in the direction. This storage bag is very convenient and can be used repeatedly. It is convenient to put it in a backpack in the car.