The Sea to Summit eVent Dry Compression Sack is a durable, versatile sleeping bag and clothing dry storage option for backpacking, camping, and water sports. The valve-free expelling design works to compress bulky clothing or gear, by rolling and pushing out excess air. Manufactured from lightweight PU-coated 70D nylon, and a 40D nylon air permeable/waterproof base, with a 10,000mm 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. The secure hypalon roll-top closure features four straps for even compression. The Sea to Summit eVent Dry Compression Sack has a pull handle at the bottom for easy hauling, and a patent-pending field repair buckle can be replaced in seconds with a Phillips screwdriver. Available in five sizes: 6 liter, 10 liter, 14 liter, 20 liter, and 30 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.