This lightweight waterproof shelter can function in limitless ways as a sleeping hammock (with enough extra material to fold over you as a roof), or you can make an A-frame shelter with a couple of trekking poles. Or make a lean-to, a tent footprint, a sun shade, an emergency bivy, or a rain fly. Weighing in at just over a pound, this shelter is a smart bet for practical, fast-and-light travel. It makes sense that the All-In-One Shelter is frequently rated as a must-have piece of gear. Dimensions