"Pack smarter for wet weather or on-the-water adventures with the Sea to Summit Evac Compression Dry Bag! It's built to keep water out thanks to a durable water-repellent (DWR) finish, a waterproof polyurethane coating, and waterproof, double-stitched, and tape-sealed seams. Its innovative waterproof Evac base also seals out water but allows air to pass through, so you can easily maximize compression while keeping contents protected from the elements. 4 compression straps (2 ladderlock and 2 side-release buckles) help you achieve even compression with no bulges. Non-wicking, roll-top closure sports a patented Field Repair Buckle for a reliable seal. Also features sturdy nylon-webbing grab handle. Feel good about your choice 70-denier recycled-nylon material is bluesign approved. 70-denier recycled-nylon material is bluesign approved DWR finish Waterproof polyurethane coating Waterproof, double-stitched, and tape-sealed seams Waterproof yet air-permeable Evac base air can be pushed out, but water can't get in 4 compression straps (2 ladderlock and 2 side-release buckles) Non-wicking, roll-top closure with Field Repair Buckle for a reliable seal Nylon-webbing grab handleSpecs: 8L 15.5""H x 7.6""W x 7""DWeight: 4 oz. 13L 17.6""H x 8.7""W x 8""DWeight: 4.8 oz 20L 18""H x 10.4""W x 9.3""DWeight: 5.6 oz 35L 22""H x 12.6""W x 11.5""DWeight: 6.7 oz."