Watershed Yukon Kayak Drybag - From raft guides to divers, people look to Watershed for superior dry protection. Overcoming the common shortfalls of drybags, they"ve invented the ultimate waterproof luggage. First and most obvious was the closure. The patented ZipDry seal is similar to a heavy-duty freezer bags zipper. It locks shut, keeping out moisture with an airtight, waterproof seal, even when submerged and under pressure. The lengthwise opening also allows access to everything at once. Next, the polyurethane-coated 420-denier nylon pack cloth Kryptothane fabric offers 5 times the abrasion resistance of PVC, stays flexible in cold weather, is UV-stable, and more environmentally friendly. Radio-frequency welding bonds the multiple layers of fabric into a single piece of material, eliminating leaks. Finally, they worked out the small details that separate great gear from mediocre. Extreme-duty nylon webbing lash points and compression straps, Duraflex side-release buckles, and D-rings combine to secure your goods, no matter what happens. Through intensive quality assurance, including prolonged inflation testing, Watershed produces truly waterproof bags that are guaranteed to be free of leaks. If you need bombproof dry protection for your gear, look no further.