Fully waterproof with minimal weight, the SealLine BlockerLite Dry Sack Waterproof Stuff Sack is a roll-top dry sack for organizing and packing essential clothing and gear in backpacks and duffels, for trail and paddling adventures. Waterproof construction with a roll-top closure features a wrinkle-free stiffening strip to ensure that sack contents are kept safe and dry. Fully welded seams provide unmatched strength and durability, compared to sewn-and-taped seams, and the 20-denier silicone and polyurethane-coated nylon delivers reliable all-around waterproof protection while barely tipping the scale. Unlike traditional, rounded stuff sacks, the SealLine BlockerLite Dry Sack Waterproof Stuff Sack is shaped like a rectangle with flat sides that nestle closely together and pack 20 percent more efficiently, for space-saving organization. Available in a variety of sizes and colors for building out the perfect packing system for backpacking, camping, boating, expeditions, and travel. Manufacturer’s limited lifetime warranty.