Ultralight 20-liter roll-top/compression strap dry bag with an air-permeable base—air can be pushed out, but water can’t get in—and three straps for even compression of gear for backpacking, camping, and water sports Manufactured from bluesign-approved lightweight Ultra-Sil 30D ripstop nylon, with a non-PFC DWR finish; 2,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric) Reinforced waterproof seams are double-stitched, and tape sealed, with reinforced stitching at stress points; secure hypalon roll-top closure with three compression straps featuring two ladderlock and one side release buckle Patent-pending field repair buckle can be replaced in seconds; round base with exterior lash points for attachment to kayaks, boats, packs, and bikes 20-liter compression dry bag measures 9.5 x 9.5 x 18.7 inches when closed, and weighs 0.24 pounds; volume is 20 liters (with closure rolled three times) The Sea to Summit eVac Ultra-Lightweight Compression Dry Bag is an extremely light, roll-top/compression strap dry bag with an air-permeable base—air can be pushed out, but water can’t get in—and three straps for even compression. Ideal for backpacking, sea kayaking, and travelling, the valve-free expelling design works along with the straps to compress bulky clothing or gear, by rolling and pushing out excess air and cinching down the straps. Manufactured from bluesign-approved lightweight Ultra-Sil 30D ripstop nylon, with a non-PFC DWR finish, with a 2,000mm waterhead (the higher the waterhead rating, the more waterproof the fabric), its reinforced waterproof seams are double-stitched, and tape sealed, with reinforced stitching at stress points. A waterproof Hypalon roll-top closure, and three straps featuring two ladderlock and one side-release buckle, keeps gear compact and secure. The Sea to Summit eVac Ultra-Lightweight Compression Dry Bag has a round base and exterior lash points for attachment to kayaks, boats, packs, and bikes. A patent-pending field repair buckle can be replaced in seconds with a Phillips screwdriver. Available in five sizes: 3 liter, 5 liter, 8 liter, 13 liter, and 20 liter, to carry everything from small essentials to group gear. Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.