Thermarest tranquility 4 footprint preserve the floor of your tranquility 4 tent or create a stand alone shelter with the tranquility tents rainfly and poles product details the tranquility 4 footprint perfectly matches the size of the tranquility 4 tent to protect its floor from damage but theres more the footprint is also compatible with the tents rainfly so you can create a stand alone shelter protects the footprint preserves the floor of your tent multi functional our t