About this item 100% Nylon Ultralight 2.5-liter stuff sack, for organizing and packing, defends camping and backpacking gear against light rain, splashes, and wet packs Draw-cord closure offers speedy, hassle-free access to stuff sack contents; lockable cords ensures that the sack cinches tight Fully welded seams for strength and durability; featherweight 20D silicone and polyurethane-coated nylon is tough and splash-resistant Flat-sided, rectangular shaped sacks nestle closely together for more efficient packing and space-saving organization 2.5-liter (153 cubic inches) stuff sack measures 2.7 x 5.3 x 9.4 inches, and weighs just 0.5 ounces; manufacturer’s limited lifetime warranty