Designed to keep the contents of your pack organized and bone dry, Osprey???s Dry Sacks provide the security of waterproof gear storage and color-coded organization in your pack.. . Fabric: 40D Nylon Ripstop. Roll-top waterproof closure. Waterproof coated fabric and seams. Rectangular shape for efficient packing. Capacity: 732 cu. in. / 12 L. Measures: 16H X 9W X 5D in.. Weight: 0.09 lbs.. Spot clean. Imported.