Marine Compression Stuff Sack. Flexible, low-profile purge valves like our Kodiak bags for snag-free packing in tight places. Proprietary and incredibley durable lightweight fabrics and coatings (200D polyurethane coated Oxford nylon), Dry Seal dual-strip roll-down closure. Volume: 9L/549 cubic inches Weight: 93 grams/3.3oz Dimensions: 18x33 cm/7x13 inches