The Double Rainbow is a single wall ultralight tent from Tarptent. Two doors, two vestibules, and full no-see-um netting provide ample space for two gear-conscious backpackers. The tent is free-standing with trekking poles (at least 55 in. in length), or you can stake out the four corners for tension, and comes with a single curved pole down the middle. Backpack with the room, and without the weight.