Hard to believe we can fit two people and two dogs under a tarp without getting wet in a rainstorm, but we do just fine. The plus side, is we can cook and gaze at the sunrise without ever getting out of our sleeping bags. These Ultralite Nylon Tarps are constructed with waterproof 1.1 oz ripstop nylon tarps with silicone coating. Very lightweight, sizes range in weight from 9 oz to 18.8oz. All sizes have reinforced grommets spread approximately every three feet and 3 grosgrain ties across the top. Key seams are double stitched for strength. Comes packaged in its own reusable mesh bag with drawstring and cord lock. 6 x 8 ft. weighs 9 oz. 8 x 10 ft. weighs 14 oz. 10 x 12 ft. weighs 18.8 oz.