Outdoor Products 3-Pack Ultimate Dry Sack Keep your clothing, sleeping bags, electronics, and maps dry in these durable, yet lightweight dry sacks from Outdoor Products. This pack of three sacks includes a two-liter, four-liter, and eight-liter dry bag to keep important gear of different sizes protected in backpacks or duffle bags. Each bag is constructed with soft and flexible rip-stop fabric with watertight roll-top closures for easy packing and compression. The bags are polyurethane coated and boast watertight, double-stitched, tape-sealed seams to keep the water out, even if your bags tumble into the water. Light enough for backpacking and sturdy enough for boating, these bags may make all the difference between a wet versus dry night in the outdoors. Please note--while the dry sacks will keep water out of bags momentarily dropped in the water, they are not intended for full and extended submersion.