Chinook AquaTight Dry Sack Extremely lightweight and very compact Made of durable rip stop nylon with a watertight roll-top closure and easy grab handle All main seams are factory seam taped for complete waterproof protection Size: 7 x 18 Inch (18 x 45 cm); Weight: 2.6 oz. (74 g); Capacity: 800 cubic Inch (13 L)